God’s promise to Abraham was that he would become a great nation and that all peoples on earth would be blessed through him. In Galatians 3, Paul shows that this promise came centuries before the law of Moses, and that Abraham was made right with God by faith, not by works. Through Jesus, the promised blessing reaches every nation, and that blessing is the gift of the Holy Spirit.
God’s Promise Came Before the Law
The gospel of grace wasn’t a divine afterthought. Long before God gave Moses the law at Mount Sinai, he made a promise to Abraham.
Genesis 12:2-3 “I will make you into a great nation, and I will bless you; I will make your name great, and you will be a blessing. I will bless those who bless you, and whoever curses you I will curse; and all peoples on earth will be blessed through you.”
Paul pointed out that this timing matters. The law came 430 years after God’s promise, and it “does not set aside the covenant previously established by God and thus do away with the promise” (Galatians 3:17). The false teachers in Galatia had it backward. They elevated the law above the promise, when God’s promise had come first all along.
Abraham Was Justified by Faith
How did Abraham become right with God? Not by keeping the law, since it didn’t exist yet. God told Abraham, who had no children, that his descendants would be as numerous as the stars. Abraham’s response is one of the most important verses in the Bible.
Genesis 15:6 Abram believed the Lord, and he credited it to him as righteousness.
Abraham trusted God’s promise, and God counted his faith as righteousness. We are saved the same way today. Paul concluded, “Understand, then, that those who have faith are children of Abraham” (Galatians 3:7). That was controversial for Paul’s Jewish audience, because it meant Gentile believers were full members of Abraham’s family.
The Blessing Is for Every Nation
God’s promise was never meant only for Israel. From the beginning, he planned to bless “all peoples on earth” through Abraham. Jesus unlocked that blessing through the cross.
Galatians 3:14 He redeemed us in order that the blessing given to Abraham might come to the Gentiles through Christ Jesus, so that by faith we might receive the promise of the Spirit.
Notice what Paul identifies as the promised blessing: the Spirit. Jesus took the curse of the law on himself so that people from every nation could receive the Holy Spirit through faith. On the day of Pentecost, that promise came true as the Spirit was poured out and thousands believed (Acts 2:32-41).
The Spirit Guarantees Our Inheritance
The Holy Spirit isn’t just a blessing for today. He is also God’s guarantee of everything still to come.
Ephesians 1:13-14 And you also were included in Christ when you heard the message of truth, the gospel of your salvation. When you believed, you were marked in him with a seal, the promised Holy Spirit, who is a deposit guaranteeing our inheritance until the redemption of those who are God’s possession—to the praise of his glory.
When we trust Jesus, God marks us as his own and gives us his Spirit as a down payment on our future inheritance. Like Abraham, we live by faith in promises that are still unfolding, and we can trust the God who always keeps his word.
The Takeaway
What was God’s promise to Abraham? To bless all nations through him. That promise came before the law, was received by faith, and is fulfilled in Jesus, who gives the Holy Spirit to everyone who believes.
