We see that God makes the gospel promise to Abraham through covenant in Genesis 12:1-3. God gave him this promise:"In you all the nations shall be blessed." That blessing comes through Abraham's Seed who is Christ. "Now to Abraham and his Seed were the promises made. He does not say, and to seeds as of many, but of one, and to your Seed, who is Christ" (Galatians 3:16).
Old Testament believers had the gospel in Genesis of the Messiah who was coming. As believers today, we know that He has come "that the blessing of Abraham might come upon the Gentiles in Christ Jesus, that we might receive the promise of the Spirit through faith" (Galatians 3:14).
All believers receive the blessing as Abraham did in Genesis. He was justified before God by faith. "And he believed in the LORD, and He accounted it unto him for righteousness" (Genesis 15:6). The gospel has always been received by faith (Hebrews 11:39-40).
The gospel came to Abraham in Genesis through the covenant promise. The gospel comes today to all believers through the covenant fulfillment."Jesus Christ is the same yesterday, today, and forever"(Hebrews 13:8). Jesus said, "Your father Abraham rejoiced to see my day, and he saw it and was glad" (John 8:56).
