Lamech, the wicked branch of that cursed root of Cain, took unto him two wives, against God's first institution, Genesis 2:24 Zechariah 2:15, and without God's leave.
Related Commentaries of Genesis 4:19
Genesis 4:19
19 And Lamech took unto him two wives: the name of the one was Adah, and the name of the other Zillah.