The Consistent Word:
The truth of the Bible is simple and clear. God never commanded anyone to have more than one wife. Throughout Scripture we see the consistent Word of God, even in regard to this issue.
Look at the first man, Adam. God gave him one wife, Eve. God commanded them to fill the earth with their children.
And God blessed them, and God said unto them, Be fruitful, and multiply, and replenish the earth, and subdue it. (Genesis 1:28)
Though God told them to be fruitful and multiply, God did not give Adam more than one wife for an easier way of multiplying and replenishing the earth! This makes it very clear that it was not God’s plan for man to have more than one wife, even in a sinless environment.
The first one to have had more than one wife was Lamech. He was the seventh from Adam, in Cain’s line.
And Lamech took unto him two wives: the name of the one was Adah, and the name of the other Zillah. (Genesis 4:19)
Lamech is the father of polygamy!
On the other hand, the seventh from Adam, from Seth’s side, was Enoch, who walked with God and was translated to heaven (See Hebrews 11:5). This is an interesting parallel running from two streams—one, earthward, and the other, heavenward.
Barely 1500 years after creation God decided to destroy the entire world because of the terrible sins that prevailed over the entire human race. Only one family—Noah’s—was found righteous before God. Apart from the sins of crime and violence, there was this disregard for the purity of marriage too. The Scripture declares:
That the sons of God saw the daughters of men that they were fair; and they took them wives of all which they chose. And the LORD said, My spirit shall not always strive with man. (Genesis 6:2, 3)
On the other hand, Noah and his three sons followed the model that God had set in the beginning. All these men were married and they had only one wife each. It is written:
Noah, and Shem, and Ham, and Japheth, the sons of Noah, and Noah's wife, and the three wives of his sons with them, into the ark. (Genesis 7:13)
Noah and his wife, and their three sons and their wives—eight people—were saved during the flood. Peter wrote about the number of people who survived the flood.
The longsuffering of God waited in the days of Noah, while the ark was a preparing, wherein few, that is, eight souls were saved by water. (1 Peter 3:20)