John Gills Exposition of the Bible Commentary - Genesis 18:1
And the Lord appeared unto him in the plains of Mamre ,.... That is, to Abraham; and very likely this appearance of God was quickly after the affair of the circumcision, to show his approbation of his ready obedience to his command; and at this time he was in the plains, or at the oaks of Mamre, the oaken grove there, as has been observed on Genesis 13:18 ; and which seems to be the best rendering of the words, since in Genesis 18:4 ; mention is made of a tree to sit and stand under; and... read more
Matthew Henry's Complete Commentary - Genesis 18:1-8
The appearance of God to Abraham seems to have had in it more of freedom and familiarity, and less of grandeur and majesty, than those we have hitherto read of; and therefore more resembles that great visit which, in the fullness of time, the Son of God was to make to the world, when the Word would be flesh, and appear as one of us. Observe here, I. How Abraham expected strangers, and how richly his expectations were answered (Gen. 18:1): He sat in the tent-door, in the heat of the day; not so... read more