19 And Lamech took unto him two wives: the name of the one was Adah, and the name of the other Zillah.
Genesis 4:19 Cross References - KJ2000
Genesis 2:18
18 And the LORD God said, It is not good that the man should be alone; I will make him a helper suitable for him.
Genesis 2:24
24 Therefore shall a man leave his father and his mother, and shall cleave unto his wife: and they shall be one flesh.
Matthew 19:4-6
4 And he answered and said unto them, Have you not read, that he who made them at the beginning made them male and female,
5 And said, For this cause shall a man leave father and mother, and shall cleave to his wife: and they two shall be one flesh?
6 Therefore they are no more two, but one flesh. What therefore God has joined together, let not man put asunder.
Matthew 19:8
8 He said unto them, Moses because of the hardness of your hearts allowed you to put away your wives: but from the beginning it was not so.