John Gills Exposition of the Bible Commentary - Genesis 18:2
And he lifted up his eyes and looked ,.... To see if he could observe any passengers coming that way: and, lo, three men stood by him ; having perhaps descended at once from heaven upon the spot near where Abraham sat; for these, whoever they were, appeared in an human form, and they were took by Abraham at first sight to be men, and as such he treated them: some have taken these to be the three divine Persons, as some of the ancients; of which opinion was Dr. Lightfoot, who expressly... 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