Bereshis 18:1-2

Orthodox Jewish Bible

18 And Hashem appeared unto him in the terebinth trees of Mamre; and he sat in the entrance of the ohel (tent) in the heat of the day;

² And he lifted up his eyes and looked, and, hinei, Shloshah Anashim (Three Men, [Yeshayah 6:3]) stood by him; and when he saw them, he ran to meet them from the entrance of the ohel, and prostrated himself on the ground,