Moses
Genesis 22:11BSB·traditional attribution

Just then the angel of the LORD called out to him from heaven, “Abraham, Abraham!” “Here I am,” he replied.

John Calvin Reformed @genevareformer

11. And the angel of the Lord called unto him . The inward temptation had been already overcome, when Abraham intrepidly raised his hand to slay his son; and it was by the special grace of God that he obtained so signal a victory. But now Moses subjoins, that suddenly beyond all hope, his sorrow was changed into joy.

Matthew Henry Presbyterian @wholebiblehenry

Hitherto this story has been very melancholy, and seemed to hasten towards a most tragical period; but here the sky suddenly clears up, the sun breaks out, and a bright and pleasant scene opens. The same hand that had wounded and cast down here heals and lifts up; for, though he cause grief, he will have compassion.

Commenting on Genesis 22:11-14

John Gill Reformed Baptist @doctorgill

And the Angel of the Lord called unto him out of heaven,.... Not a created angel, but the eternal one, the Son of God, who perhaps appeared in an human form, and spoke with an articulate voice, as be frequently did; for that this was a divine Person is clear from his swearing by himself, and renewing the promise unto Abraham, Gen 22:16, and said...