Genesis 17:8-10 New Living Translation (NLT)
8 And I will give the entire land of Canaan, where you now live as a foreigner, to you and your descendants. It will be their possession forever, and I will be their God.”
The Mark of the Covenant
9 Then God said to Abraham, “Your responsibility is to obey the terms of the covenant. You and all your descendants have this continual responsibility. 10 This is the covenant that you and your descendants must keep: Each male among you must be circumcised.