John Gill Commentary Genesis 18:22

"And the men turned from thence, and went toward Sodom: but Abraham stood yet before Jehovah." — Genesis 18:22 (ASV)

And the men turned their faces from that place From the place to which Abraham brought them on; these were only two of them, for the third continued with Abraham: and went towards Sodom ; and are the two angels said to come there at evening, (Genesis 19:1) :

but Abraham stood yet before the Lord ; before the third person, whom Abraham now began to know more clearly; he stood before him with all reverence and humility, to hear what he had further to say to him, as well as to say something to him himself; he stood "yet", he continued to stand after the departure of the two angels that were gone to Sodom. Onkelos and Jonathan paraphrase it, ``he ministered in prayer before the Lord.''