Genesis 19:1
And there came two angels to Sodom at even. And Lot sat at the gate of the city. And Lot saw them, and rose up to meet them, and he bowed himself to the ground with his face.
Genesis 18:22
And the men departed thence and went to Sodomward. But Abraham stood yet before the LORD,
Genesis 18:1-5
And the LORD appeared unto him in the oak grove of Mamre as he sat in his tent door in the heat of the day.
Job 31:32
I have not suffered a stranger to lie without, but opened my doors unto him.
Hebrews 13:2
Be not forgetful to lodge strangers. For thereby have divers received angels into their houses unawares.