Moses
Genesis 12:7WEB·traditional attribution

Yahweh appeared to Abram and said, “I will give this land to your seed.” He built an altar there to Yahweh, who appeared to him.

John Gill Reformed Baptist

And the Lord appeared unto Abram,.... Perhaps in an human form, and so it was the Son of God; for whenever there was any visible appearance of a divine Person, under the former dispensation, it seems to be always of the essential Word, that was to be incarnate, and who spake with an articulate voice: and said, unto thy seed will I give this land...

John Calvin Reformed

7. And the Lord appeared unto Abram . He now relates that Abram was not left entirely destitute, but that God stretched forth his hand to help him. We must, however, mark, with what kind of assistance God succours him in his temptations. He offers him his bare word, and in such a way, indeed, that Abram might deem himself exposed to ridicule.

Geneva Bible Notes Reformed

And the LORD appeared unto Abram, and said, Unto thy seed will I give this land: and there builded he an altar unto the LORD, who appeared unto him. (g) It was not enough for him to worship God in his heart, but it was expedient to declare by outward profession his faith before men, of which this altar was a sign.