Genesis 18:17-19

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

18Abraham is to become a great and powerful nation, and all the nations of the earth will be blessed through him.

19For I have chosen him so that he will command his children and his house after him to keep the way of the Lord by doing what is right and just. This is how the Lord will fulfill to Abraham what he promised him.”