Moses
Genesis 4:19ESV·traditional attribution

And Lamech took two wives. The name of the one was Adah, and the name of the other Zillah.

John Calvin Reformed @genevareformer

19. And Lamech took unto him two wives . We have here the origin of polygamy in a perverse and degenerate race; and the first author of it, a cruel man, destitute of all humanity. Whether he had been impelled by an immoderate desire of augmenting his own family, as proud and ambitious men are wont to be, or by mere lust, it is of...

Matthew Henry Presbyterian @wholebiblehenry

We have here some particulars concerning Lamech, the seventh from Adam in the line of Cain. Observe, I. His marrying two wives. It was one of the degenerate race of Cain who first transgressed that original law of marriage that two only should be one flesh. Hitherto one man had but one wife at a time; but Lamech took two. From the beginning it was not so.

Commenting on Genesis 4:19-22

John Gill Reformed Baptist @doctorgill

And Adah bare Jabal,.... According to Hillerus (m), this name, and Jubal and Tubal, after mentioned, all signify a river; why Lamech should call all his sons by names signifying the same thing, is not easy to say. He was the father of such as dwelt in tents, and of such as have cattle: not in a proper sense the father of them, though his...