Genesis 18:2
2 He lifted up his eyes and looked, and behold, ythree men were standing in front of him. When he saw them, he ran from the tent door to meet them and zbowed himself to the earth
Genesis 18:8–10
8 Then he took curds and milk and the calf that he had prepared, and set it before them. And he stood by them under the tree while they ate.
9 They said to him, “Where is Sarah your wife?” And he said, “She is in the tent.” 10 The Lord said, e“I will surely return to you about this time next year, and fSarah your wife shall have a son.” gAnd Sarah was listening at the tent door behind him.
Hebrews 13:2
2 Do not neglect to show thospitality to strangers, for thereby some have uentertained angels unawares.