Genesis 18:2, 17, 22, 31

and he lifted up his eyes and looked, and, lo, three men stood over against him: and when he saw them, he ran to meet them from the tent door, and bowed himself to the earth

And Jehovah said, Shall I hide from Abraham that which I do

And the men turned from thence, and went toward Sodom: but Abraham stood yet before Jehovah.

And he said, Behold now, I have taken upon me to speak unto the Lord: peradventure there shall be twenty found there. And he said, I will not destroy it for the twenty’s sake.