Genesis 3:15 - I will put enmity between you and the woman, and between your offspring and her offspring; He shall crush your head, and you shall bruise his heel.Ironically, the first promise of the Gospel is spoken to Satan. The first promise of the Gospel is spoken as part of the serpent's curse, but it is humanity's hope.
Indeed, the Serpent does strike the heel of Jesus on the cross - but this was not his victory. It pleased God that Jesus might suffer (Isaiah 53) that He might triumph by the cross and ultimately, the resurrection. With His blood He "purchased men for God from every tribe and language and people and nation" (Revelation 5:9).
The next few chapters of Genesis serve as introduction to the rest of the Story - the flood, Noah, and Babel. But the main body of The Story begins in Genesis 12 - when God calls Abram. The first three verses of Genesis 12 are critical to understanding everything that follows. In Galatians 3:8, Paul declares that these verses are the Gospel!
The Scripture foresaw that God would justify the Gentiles by faith, and announced the gospel in advance to Abraham: "All nations will be blessed through you."
All nations will be blessed through you. This promise comes to Abraham, then to Isaac, and again to Jacob. We see three fulfillments of this promise throughout Scripture. The first is through Abraham's family, the children of Israel. The second fulfillment of this promise is through Jesus and all who become part His family through faith. We see the ultimate fulfillment at the end of age, when there will be "a great multitude that no one could count, from every nation, tribe, people and language, standing before the throne and in front of the Lamb," as Revelation 7:9 declares.
The Gospel is not about you or me. It never has been, nor will it ever be. We are redeemed that we might become agents of redemption, that everything affected by the curse of the Fall may be restored into right relationship with God.