Although most of us know that God made a covenant with Abram/Abraham, yet the Scripture teaches us in Galatians 4 that there are two covenants (The Parable of Abraham's 2 Wives). If there are two covenants - where do we find them?
The first covenant is in Genesis 15, and the second is in Genesis 17. You can find explanations, clarifications, evidence in this regard in the book "The Creation, from Genesis to Revelation?", in the chapter on covenants. You can read it on this website: facerea.ro.