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;
the whole of it inhabited by Canaanites and others; and it was for this end chiefly that Abram was called out of Chaldea into Canaan, to be shown the land, and have the grant of it for his posterity:
and there builded an altar unto the Lord, who appeared unto
by way of gratitude and thankfulness for his kind and gracious appearance, and for the gift of the land of Canaan to his offspring; for on this altar he no doubt offered sacrifice in a way of thanksgiving, as Noah did when he came out of the ark.