Cross reference
Genesis 4:19
19 And Lamech had two wives; the name of the one was Adah, and the name of the other Zillah.
Genesis 2:24
24 For this cause will a man go away from his father and his mother and be joined to his wife; and they will be one flesh.
Genesis 2:18
18 And the Lord God said, It is not good for the man to be by himself: I will make one like himself as a help to him
Matthew 19:4-6
4 And he said in answer, Have you not seen in the Writings, that he who made them at the first made them male and female, and said,
5 For this cause will a man go away from his father and mother, and be joined to his wife; and the two will become one flesh?
6 So that they are no longer two, but one flesh. Then let not that which has been joined by God be parted by man.
Matthew 19:8
8 He says to them, Moses, because of your hard hearts, let you put away your wives: but it has not been so from the first.