Genesis 18:2

18:2 Abraham looked up and saw three men standing across from him. When he saw them he ran from the entrance of the tent to meet them and bowed low to the ground.

Genesis 19:1

The Destruction of Sodom and Gomorrah

19:1 The two angels came to Sodom in the evening while Lot was sitting in the city’s gateway. When Lot saw them, he got up to meet them and bowed down with his face toward the ground.