Cross reference
Genesis 4:19
19 Lamech took two wives: the name of the one was Adah, and the name of the other Zillah.
Genesis 2:24
24 Therefore a man will leave his father and his mother, and will join with his wife, and they will be one flesh.
Genesis 2:18
18 Yahweh God said, "It is not good that the man should be alone; I will make him a helper suitable for him."
Matthew 19:4-6
4 He answered, "Haven't you read that he who made them from the beginning made them male and female,
5 and said, 'For this cause a man shall leave his father and mother, and shall join to his wife; and the two shall become one flesh?'
6 So that they are no more two, but one flesh. What therefore God has joined together, don't let man tear apart."
Matthew 19:8
8 He said to them, "Moses, because of the hardness of your hearts, allowed you to divorce your wives, but from the beginning it has not been so.