Moses
Genesis 6:5BSB·traditional attribution

Then the LORD saw that the wickedness of man was great upon the earth, and that every inclination of the thoughts of his heart was altogether evil all the time.

John Calvin Reformed @genevareformer

5. And God saw that the wickedness of man was great . Moses prosecutes the subject to which he had just alluded, that God was neither too harsh, nor precipitate in exacting punishment from the wicked men of the world.

Matthew Henry Presbyterian @wholebiblehenry

We have here a further account of the corruption of the old world. When the sons of God had matched with the daughters of men, though it was very displeasing to God, yet he did not immediately cut them off, but waited to see what would be the issue of these marriages, and which side the children would take after; and it proved (as usually...

Commenting on Genesis 6:4-5

John Gill Reformed Baptist @doctorgill

And God saw the wickedness of man was great in the earth,.... That it spread throughout the earth, wherever it was inhabited by men, both among the posterity of Cain and Seth, and who indeed now were mixed together, and become one people: this respects actual transgressions, the wicked actions of men, and those of the grosser sort, which were "multiplied" (r) as the word...