Moses
Genesis 12:17ESV·traditional attribution

But the LORD afflicted Pharaoh and his house with great plagues because of Sarai, Abram’s wife.

John Calvin Reformed @genevareformer

17. And the Lord plagued Pharaoh . If Moses had simply related, that God had punished the king for having committed adultery, it would not so obviously appear that he had taken care of Sarai’s chastity; but when he plainly declares that the house of the king was plagued because of Sarai, Abram’s wife, all doubt is, in my judgment, removed; because God, on behalf...

Matthew Henry Presbyterian @wholebiblehenry

Here is, I. The danger Sarai was in of having her chastity violated by the king of Egypt: and without doubt the peril of sin is the greatest peril we can be in. Pharaoh's princes (his pimps rather) saw her, and, observing what a comely woman she was, they commended her before Pharaoh, not for that which was really her praise - her virtue and...

Commenting on Genesis 12:14-20

John Gill Reformed Baptist @doctorgill

And the Lord plagued Pharaoh and his house with great plagues,.... Perhaps with the same sort that Abimelech and his servants were smote with on a like account, Gen 20:17. The Jews (h) say they were smitten with ulcers; not only Pharaoh was plagued, but those of his household also, his courtiers and servants, who were accessary to the bringing of Sarai into his house...