Moses
Genesis 12:18ESV·traditional attribution

So Pharaoh called Abram and said, “What is this you have done to me? Why did you not tell me that she was your wife?

John Calvin Reformed @genevareformer

18. And Pharaoh called Abram . Pharaoh justly expostulates with Abram, who was chiefly in fault. No answer on the part of Abram is here recorded; and perhaps he assented to the just and true reprehension. It is, however, possible that the exculpation was omitted by Moses; whose design was to give an example of the Divine providence in preserving Abram, and vindicating his marriage relation.

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 Pharaoh called Abram, and said,.... Understanding how it was, that Sarai was his wife, which he came at the knowledge of, either by consulting his priests and diviners, as some say, on account of the plagues inflicted; or rather suspecting they were on the account of Sarai, from the nature of them, sent for her, and questioned her about this affair, who confessed the...