Galatians 3:15-18 What the Purpose of the Law Is Not (January 25, 2025 AM, Dr. Michael Grasso)

"What was the purpose of the Mosaic Law—and just as importantly, what was it not given to do? In Galatians 3:15–18, the Apostle Paul answers a crucial question that lies at the heart of the doctrine of justification by faith: Was the law ever meant to overturn God’s promise of salvation in Christ?

In this sermon, we examine Paul’s legal and redemptive-historical argument that once God ratified the covenant of promise with Abraham, it could not be annulled by the law that came 430 years later. The promise of inheritance and worldwide blessing was never grounded in obedience to the law, but in God’s gracious promise—fulfilled in Abraham’s singular seed, Jesus Christ.

We also address Paul’s much-debated grammatical argument concerning the “seed” of Abraham, showing how it is rooted in the Hebrew text itself and climaxes in Genesis 22:18. Far from undermining Moses, Paul demonstrates that the Mosaic Law was always subordinate to—and supportive of—the promise of salvation in Christ.

This passage decisively refutes the idea that the Old Testament taught salvation by works, and it affirms the fundamental unity of Scripture: from beginning to end, the Bible proclaims one gospel—salvation by grace through faith in the promised Messiah.

May God grant us grace to see the glory of this salvation and to cling to Christ alone, in whom all the promises of God find their “Yes” and “Amen.”

#Galatians #JustificationByFaith #LawAndGospel #AbrahamicCovenant #ChristInTheOT #BiblicalTheology #ReformedTheology #SolaFide #PromiseAndLaw #JesusChrist #ExpositoryPreaching"