And all the prophets, as many as have spoken, from Samuel and those after him, also predicted these days. You are the descendants of the prophets and of the covenant that God gave to your ancestors, saying to Abraham, ‘And in your descendants all the families of the earth shall be blessed.’ When God raised up his servant, he sent him first to you, to bless you by turning each of you from your wicked ways.”
— Acts 28.23-31

In this, we see that we, the New Covenant People of God, are still members of the covenant that’s been in effect the whole time: the Abrahamic Covenant. It is not done away with; only brought under a new administration: that of Christ.

See other Marginalia here. Read more about the series here.