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 18:17

18:17 Then the Lord said, “Should I hide from Abraham what I am about to do?

Genesis 18:22

18:22 The two men turned and headed toward Sodom, but Abraham was still standing before the Lord.

Genesis 18:31

18:31 Abraham said, “Since I have undertaken to speak to the Lord, what if only twenty are found there?” He replied, “I will not destroy it for the sake of the twenty.”