What is this polygamy?   You surely can read!  This link needs to be read. All of it.
Some of the best quotes from thousands of hours of reading. Spend 2 hours each day reading for decades, and you will understand.
Millions of people don’t trust God. They don’t believe what he has said, because they can’t see him. They have been told by leaders that they don’t really have to obey God, just be good citizens. A few religious fanatics called prophets, “real” prophets have seen him because they do believe all that he has commanded.

One other thing, they have been Plygs’. Brigham Young said: “The religion of Adam, Enoch, Noah, Abraham, Isaac, Jacob, the patriarchs and prophets, Jesus and his Apostles, is the only acknowledged and popular system of religion with the sanctified ones in the presence of the Father and the Son.
Abraham the polygamist’s religion is the only one popular in heaven. Monogamy,
or restriction by law to one wife, is no part of the economy of Heaven.
Why do we practice polygamy? Because the Lord introduced it to Joseph & the Lord’s servants have always practiced it. It is the only popular religion in heaven.”    Journal of Discourses, 26 vols. London: Latter-day Saints' Book Depot, 1854-1886],   J D 9: 319-322.)             I will make a list of quotes for you.

Heber C. Kimball said: “Brother Brigham is not responsible for this people any further than they will follow his counsel. When they observe his counsel, doing just as he says in all things, then he is responsible.
The only way that you can make him responsible is by observing his sayings in the most strict manner possible.
Am I responsible for the acts of my wife or wives? Only on condition that they are subject to my counsels.
You can readily understand that their disobedience releases me from responsibility for their conduct.

When brother Brigham predicts that certain things will happen if the people persist in a certain course,
that prediction will be fulfilled, except the people make a retraction and an atonement sufficient to satisfy the demands of justice; for that is what God requires. When that is done, the sins of the people will be remitted.
I speak of this, that you may understand that your re-baptisms must be agreeable to the order laid down.
It is not simply a man's saying, "Having been commissioned by Jesus Christ, I baptize you for the renewal of your covenant and remission of your sins," but you must be subject to your brethren and fulfill the law of God.

Some quietly listen to those who speak against the Lord's servants, against his anointed, against the plurality of wives, and against almost every principle that God has revealed. Such persons have half-a-dozen devils with them all the time.
You might as well deny "Mormonism," and turn away from it, as to oppose the plurality of wives. Let the Presidency of this Church, and the Twelve Apostles, and all the authorities unite and say with one voice that they will oppose that doctrine, and the whole of them would be damned. What are you opposing it for?
It is a principle that God has revealed for the salvation of the human family.
He revealed it to Joseph the Prophet in this our dispensation; and that which he revealed he designs to have carried out by his people.”   (Journal of Discourses, 26 vols. [London: Latter-day Saints' Book Depot, 1854-1886],    J. D.  5: 202 - 204.)    

Brigham Young again said: “I am more afraid that this people have so much confidence in their leaders that they will not inquire for themselves of God WHETHER they are led by him. I am fearful that they settle down in a state OF BLIND self security, trusting their ETERNAL DESTINY in the hands of their leaders with a reckless confidence that in itself would thwart the purpose of God in their salvation...Let EVERY man and woman know, BY the whisperings of THE SPIRIT of God to themselves, WHETHER their leaders are walking in the path the Lord dictates, or not.”  
     (Journal of Discourses 9: 150)          Millions and Millions of Mormons. So who is chosen?

Doctrine and Covenants 95: 5-6  “But behold, verily I say unto you, that there are many who have been ordained among you, whom I have called but few of them are chosen. 6 They who are not chosen have sinned a very grievous sin, in that they are walking in darkness at noon-day.”

Again Heber said: “Jesus Christ hath said, "My sheep hear my voice, and will follow me, and a stranger they will not follow." All who profess to be Latter-day Saints will not be saved in the celestial world,
for they cannot abide the celestial law, but all will attain to the glory which they can abide. Every righteous thing that we do in this mortality is a rudimental lesson in the celestial law of our God. Let us go to with our might mind, and strength to abide the celestial law, as it shall be revealed to us from time to time, until we can abide its fulness,
that we may ultimately be introduced into the presence of our heavenly Father to dwell with him for ever more.”  (Journal of Discourses, 26 vols. [London: Latter-day Saints' Book Depot, 1854-1886],    J D 11: 146.)

Jedediah M. Grant, delivered in the Tabernacle, Great Salt Lake City, August 7, 1853    “What does old Celsus say, who was a physician in the first century, whose medical works are esteemed very highly at the present time. His works on theology were burned with fire by the Catholics, they were so shocked at what they called their impiety.
Celsus was a heathen philosopher; and what does he say upon the subject of Christ and his Apostles, and their belief? He says, "The grand reason why the Gentiles and philosophers of his school persecuted Jesus Christ, was, because he had so many wives; there were Elizabeth, and Mary, and a host of others that followed him." After Jesus went from the stage of action, the Apostles followed the example of their master. For instance, John the beloved disciple, writes in his second Epistle, "Unto the elect lady and her children, whom I love in the truth."
Again, he says, "Having many thing to write unto you (or communicate), I would not write with paper and ink:
but I trust to come unto you, and speak face to face, that our joy may be full." Again—"The children of thy elect sister greet thee." This ancient philosopher says they were both John's wives. Paul says, "Mine answer to them that do examine me is this:—.   Have we not power to lead about a sister, a wife, as well as other apostles, and as the brethren of the Lord, and Cephas."
He, according to Celsus, had a numerous train of wives.

The grand reason of the burst of public sentiment in anathemas upon Christ and his disciples, causing his crucifixion, was evidently based upon polygamy, according to the testimony of the philosophers who rose in that age. A belief in the doctrine of a plurality of wives caused the persecution of Jesus and his followers.
We might almost think they were "Mormons."    (Journal of Discourses, 26 vols. [London: Latter-day Saints' Book Depot, 1854-1886],    J D 1: 346.)

Just how many times do people go to a funeral and hear that the dead person has gone to be with the Lord?  Can you really imaging that dead person wanting to sit at the table with a man who has a few women combing his hair, rubbing his head and neck, and back, and lavishing affection upon him. They are repelled by “Plygs” today, and have been all of their life, and are not going to be happy being with Abraham, Isaac, Jacob, and Jesus, so they will not be with him.

President Orson Hyde, delivered at the General Conference, in the Tabernacle, Great Salt Lake City, October 6, 1854.   
“And how is it with him? Let us Inquire. Did the Savior of the world consider it to be his duty to fulfill righteousness? You answer, yes. Even the simple ordinance of baptism he would not pass by, for the Lord commanded it, and therefore it was righteousness to obey what the Lord had commanded, and he would fulfil all righteousness. Upon this hypothesis I will go back to the beginning, and notice the commandment that was given to our first parents in the garden of Eden.
The Lord said unto them, "Multiply and replenish the earth." I will digress here for a moment from the thread of the subject, and bring an idea that may perhaps have a bearing upon it.

The earth, you remember, was void and empty, until our first parents began at the garden of Eden. What does the term replenish mean? This word is derived from the Latin; "re" and "plenus;" "re" denotes repetition, iteration;
and "plenus" signifies full, complete; then the meaning of the word replenish is, to refill, recomplete.
If I were to go into a merchant's store, and find he had got a new stock of goods,
I should say—"You have replenished your stock, that is, filled up your establishment, for it looks as it did before." "Now go forth," says the Lord, "and replenish the earth;" for it was covered with gloomy clouds of darkness, excluded from the light of heaven, and darkness brooded upon the face of the deep.
The world was peopled before the days of Adam, as much so as it was before the days of Noah.
It was said that Noah became the father of a new world, but it was the same old world still, and will continue to be, though it may pass through many changes.

When God said, Go forth and replenish the earth; it was to replenish the inhabitants of the human species, and make it as it was before. Our first parents, then, were commanded to multiply and replenish the earth; and if the Savior found it his duty to be baptized to fulfil all righteousness, a command of far less importance than that of multiplying his race, (if indeed there is any difference in the commandments of Jehovah, for they are all important, and all essential,) would he not find it his duty to join in with the rest of the faithful ones in replenishing the earth? "
Mr. Hyde, do you really wish to imply that the immaculate Savior begat children?
It is a blasphemous assertion against the purity of the Savior's life, to say the least of it. The holy aspirations that ever ascended from him to his Father would never allow him to have any such fleshly and carnal connexions, never, no never."
This is the general idea; but the Savior never thought it beneath him to obey the mandate of his Father;
he never thought this stooping beneath his dignity; he never despised what God had made; for they are bone of his bone, and flesh of his flesh; kindred spirits, that once basked in rays of immortality and eternal life.
When he found them clothed upon and surrounded with the weaknesses of mortal flesh, would he despise them? No. It is true, I have seen men who became poor and miserable all at once, and then those who were their friends in the days of their prosperity turn from them, and scarcely deign to bestow them a look, it being too humiliating to associate with them in their poverty. But it was not so with the Savior; he associated with them in other spheres, and when they came here, descending below all things, he did not despise to associate with these same kindred spirits. "Then you really mean to hold to the doctrine that the Savior of the world was married;
do you mean to be understood so? And if so, do you mean to be understood that he had more than one wife?"   Journal of Discourses, 26 vols. [London: Latter-day Saints' Book Depot, 1854-1886],     JD 2: 79  

Discourse by President John Taylor,

The Work of God Cannot Be Hindered—The United States to Be Afflicted by Judgment      (Nuclear War is coming soon.)        Delivered at the General Conference, Held in the Tabernacle Salt Lake City, October 6th, 1879.

“I remember being asked in a court here some three or four years ago—I do not remember the time precisely, but the court seemed to be very fond of interfering with religious matters, it was not always so; but I suppose civilization has extended—I was asked, "Do you believe in obeying the laws of the United States?" "Yes I do, in all except one"—in fact I had not broken that. "What law is that?" "The law in relation to polygamy." "Well, why do you except that one?" "Because," I replied "it is at variance with the genius and spirit of our institution; because it is at variance with the Constitution of the United States; and because it is in violation of the law of God to me."
"Gather my Saints together unto me," says one of the old prophets,
"Those that have made a covenant with me by sacrifice." "I will take you," says another, "one of a city and two of a family, and I will bring you to Zion, and
I will give you pastors according to mine heart, which shall feed you with knowledge and understanding."
Now, the servants of God in these last days have been sent out as they were in former days to gather the people, and the Lord has given us this law—the law of polygamy—among other things, and I know it before God and can bear testimony of it, if nobody else knows it. I know that it came from God, and that God is its author. But there are hundreds and thousands of others who have a knowledge of the same thing; but I speak of it in this wise to testify before God, angels and men, before this nation and all other nations that it came from God.”   
(Journal of Discourses, 26 vols. [London: Latter-day Saints' Book Depot, 1854-1886],    Journal of Discourses  20: 318 - 319.) 

Brigham Young said: “CLICK HERE: The only men who become Gods, even the Sons of God, are those who enter into polygamy. Others attain unto a glory and may even be permitted to come into the presence of the Father and the Son; but they cannot reign as kings in glory, because they had blessings offered unto them, and they refused to accept them.”   Journal of Discourses  11: 269  

Joseph F. Smith “Delivered at the Funeral Services over the Remains of Elder William Clayton, Held in the 17th Ward Meeting House, Salt Lake City, December 7th, 1879.  He said: “By request of President John Taylor, I arise to make a few remarks.
I deeply and sincerely sympathize with the family, the wives and children of the deceased, Brother William Clayton, who remain to mourn the loss of the society of their husband and father for a little season. And yet, when we consider all the circumstances, we may conclude that we have not very great cause to mourn.
For when a man has lived to a good old age; worn out as it were through toil, passes away, we can realize at least that he has accomplished his mission, that he has performed his work on this earth, and is ready to return to the father from whence he came; behind the vail. Brother Clayton had reached a ripe age, after laboring unceasingly among his brethren from his first connection with the Church.

He has had a long and varied experience among this people. He was a friend and companion of the Prophet Joseph Smith, and it was to his pen to a very great extent that we are indebted for the history of the Church—that is, the history of the Prophet Joseph more particularly, during his acquaintance with him and the time he acted for him as his private secretary, in the days of Nauvoo. We have the journals which he kept during that time, in the Historian's Office, from which—in connection with those of Elders Willard Richards and Wilford Woodruff and the Times and Seasons, a publication of the Church at that time—we have obtained the history the Church during that period.
It was his pen that wrote for the first time the revelation in relation to the eternity of the marriage covenant and of a plurality of wives. Although that revelation had been given to the Prophet Joseph many years before, it was not written until the 12th of July, 1843, at which time Elder William Clayton, acting as a scribe for the Prophet, wrote it from his dictation.

I am happy to say that he has left on record a statement in the shape of an affidavit, prepared by himself, in relation to this important subject, for it is a subject that is of the most vital importance, not only to the Latter-day Saints, but to the whole world; for without the knowledge contained in that revelation, we never could consummate the object of our mission to this earth, we never could fulfill the purposes of God in this estate.”   (Journal of Discourses, 26 vols. [London: Latter-day Saints' Book Depot, 1854-1886],  JD 21: 9-10.)

William Clayton said: “From him, Joseph Smith, I learned that the doctrine of plural and celestial marriage is the most holy and important doctrine ever revealed to man on earth, AND without obedience TO THAT principle, no man can ever attain to the fulness of exaltation in Celestial Glory.”  Historical Record 6: 225-7

Orson Pratt: Delivered in the Tabernacle, Salt Lake City, Sunday Afternoon, July 18th, 1880.  
He says: “I am talking to some who have a second wife.
You lost your first wife, did you not, and you re-married according to the laws of the nations? What about these two wives? one living and the other dead; perhaps the dead one was just as good as the living; perhaps the person that died, before you gathered here to these mountains, was morally as good as any Latter-day Saint, lived up to all the light and knowledge which she was in possession of, yet she was not married to you by divine authority—what of her? Must she stand aside in the resurrection? and the second wife, because she happens to live and to receive the Gospel, and to gather up from among the nations, into the mountains, where the authority to administer these ordinances is revealed—must she supplant the first one that happened to fall into her grave before she heard these things?
Must the first one remain without her family, without her children, according to the order that exists in the eternal world, while the second one enjoys all these things because she happened to live a little longer? What do you think about it? Are there no provisions made for the first wife that has fallen asleep just as much as there is for the second? for God is without respect of persons, so far as people are honest and obedient; and though people may fail to receive the fullness of the blessings, pertaining to the Gospel, because it might not be sent to them and they fall asleep, yet God was not so short-sighted, in laying of the plan of salvation, that he made no provisions for them.
He did make provisions for them; and in what way?
That the living shall act for the dead; this is the provision. Hence, we read concerning one of the sacred and holy ordinances, called baptism, that the saints in the Corinthian church, in ancient times, were baptized for those that were dead. What was the object of this? The object was that eternal blessings might be bestowed upon those who were dead, because of the actions of the living in their behalf, providing that the dead would receive what was done for them by the living. The same great Being that ordained the principle of baptism for and in behalf of the dead, also ordained eternal union through other sacred ordinances referring to the man and the woman, not only for the living but also for the dead, that they might be benefited not only by the actions of the living in baptism, but also by the acts of the living in relation to the marriage covenant; one is just as consistent as the other.
If there is any great principle that has a bearing upon the eternal welfare of the human family, any great ordinance necessary to be attended to that will give them a right and title to eternal blessings, it matters not whether it be baptism, or the laying on of hands, or any other ordinance which God has instituted, it will be recognized in the eternal heavens. Well did the Apostle say, "Neither is the man without the woman, neither the woman without the man in the Lord." He understood the principle.

But shall we carry this one step further? I have spoken of these two women, one dying without hearing the Gospel, the other having all the privileges of the Gospel, pertaining to every blessing relating to eternity. Now if the living can act for the dead, by proxy, in other words, if the Lord our God gives a commandment, to his living Saints,
to administer in all of these ordinances for and in behalf of the dead, then the dead will have claim upon these sealing powers and ordinances, the same as though they were living. But, says one, I see one difficulty here. What is it? Why, if these two women come forth in the resurrection, and these ordinances are recognized in heaven, the man would have two wives at once in the eternal world, and that would shock our consciences very much! Well, the Lord is not particularly anxious that your consciences should not be shocked. He is not going to swerve from the principles of eternal truth in order that your consciences or traditions may not be in the least degree disturbed. He is not going to vary from this law, he ordained from before the foundation of the world, in order to suit your's or anybody else's conscience. But, says one, that would be preaching up plurality, for those that are brought forth in the eternal world.
Two women would go into the same family, and be wives for all eternity; and as you have said that the Lord commanded this multiplication to take place, when they were immortal beings, then, of course, both of these wives would raise up posterity in all ages of eternity, being immortal personages, and thus fulfil the great and first commandment. Now, says one, these are the consequences that grow out of the doctrines you are teaching.
I admit they are; perhaps you may be willing to admit the truth of this, so far as eternity is concerned, and those that have left here without hearing the Gospel.
But let me ask a question here—Is it any more right for two women to claim the same husband, after they come forth from the grave, than it is for two women, here in time living on this earth, to claim a man as their husband? If one is right, the other is right also; and if the latter is not right, then the first doctrine that I have named is not right.

All these principles that I have treated upon, pertaining to eternal marriage, the very moment that they are admitted to be true, it brings in plurality of marriage, and if plurality of marriage is not true or in other words, if a man has no divine right to marry two wives or more in this world, the marriage for eternity is not true, and your faith is all vain, and all the sealing ordinances and powers, pertaining to marriages for eternity are vain, worthless, good for nothing; for as sure as one is true the other also must be true. Amen.”