Romans 4:13-17 — What is the difference between the promise of God and the law of God? In the sermon “Salvation Guaranteed by Grace,” Dr. Martyn Lloyd-Jones expounds on the teaching of the apostle Paul in Romans 4:13–17. Here is the promise that Christ’s salvation given by God to Abraham and his descendants is a gift of grace. The law, on the other hand, says, “Do this and live!” These are two different things that are both explained in Jesus Christ. He died and fulfilled the law wholly, and it is by grace that all who believe become inheritors of His salvation. Does this mean that the law is evil? Paul gives an emphatic no to this question. The law's purpose was to point toward a gift of salvation, not provide salvation. What does the law and the promise have to do with today’s Christian? This is not an abstract theological question but it concerns the central question of salvation. It asks all to examine themselves to find out if they are truly resting in the promise of Jesus Christ or in themselves. This sermon on salvation by grace calls all to believe in the gospel of Jesus Christ as the only means of salvation.