What is the Abrahamic Covenant ?

Abraham is not Moses, not a covenant of works. The Abrahamic Covenant is God's unilateral covenant with Abraham: the promise of the Gospel (The Covenant of Grace). Galatians 3:8 The Scripture, foreseeing that God would justify the Gentiles by faith, preached **the gospel beforehand to Abraham, saying, “All the nations will be blessed in you.” Genesis 15:1 After these things the word of the Lord came to Abram in a vision, saying, “Do not fear, Abram, I am a shield to you; Your reward shall be very great.”... 12 Now when the sun was going down, a deep sleep fell upon Abram; and behold, terror and great darkness fell upon him. 13 God said to Abram, “Know for certain that your descendants will be strangers in a land that is not theirs, where they will be enslaved and oppressed four hundred years. 14 But I will also judge the nation whom they will serve, and afterward they will come out with many possessions. 15 As for you, you shall go to your fathers in peace; you will be buried at a good old age. 16 Then in the fourth generation they will return here, for the iniquity of the Amorite is not yet complete.” 17 It came about when the sun had set, that it was very dark, and behold, there appeared a smoking oven and a flaming torch which passed between these pieces. 18 On that day the Lord made a covenant with Abram... Genesis 17:7 I will establish My covenant between Me and you and your descendants after you throughout their generations for an everlasting covenant, to be God to you and to your descendants after you. Genesis 26:4 I will multiply your descendants as the stars of heaven, and will give your descendants all these lands; and by your descendants all the nations of the earth shall be blessed...