17 Do not think that I came to destroy the Law or the Prophets. I did not come to destroy but to fulfill. 18 For assuredly, I say to you, till heaven and earth pass away, one jot or one tittle will by no means pass from the law till all is fulfilled. (Matthew 5:17–18, NKJV)
Jesus came to fulfill the Law and the prophets, not to invalidate them. He did exactly that as He fulfilled the righteous requirements of the Law (He never sinned against it). Thus, Scripture says Jesus Christ is “the end of the law for righteousness to everyone who believes. For Moses writes about the righteousness which is of the law, ‘The man who does those things shall live by them’” (Romans 10:4-5). Jesus was the aim or outcome of the Law to believers. Jesus is the Messiah who fulfilled the Law and the prophets, becoming the perfect and adequate sacrifice for sins (Hebrews 5:8; 10:5-10). Therefore, Jesus was fulfilling the Law and the prophets as He was preaching “the gospel of the kingdom” (Matthew 4:23; 5:2; Luke 4:16-21). To conclude Jesus was preaching the Law to Jews to teach them how to be faithful Jews misses this fundamental point. Jesus came teaching His gospel, which contains the righteousness of faith (Romans 10:6; 1:16-17). We must hear Jesus because, as God’s Son, He fulfilled the Law and the prophets (Matthew 17:5; Hebrews 1:1-2).
13 And you, being dead in your trespasses and the uncircumcision of your flesh, He has made alive together with Him, having forgiven you all trespasses, 14 having wiped out the handwriting of requirements that was against us, which was contrary to us. And He has taken it out of the way, having nailed it to the cross. (Colossians 2:13–14, NKJV)
Christ gives spiritual life to the sinner when one is “buried with Him in baptism, in which you also were raised with Him through faith in the working of God, who raised Him from the dead” (Colossians 2:12). This spiritual life (salvation) could not be obtained by the “handwriting of requirements,” that is, the Law of Moses. The Law of Moses made nothing perfect (Hebrews 7:19; 10:1). Its offerings and sacrifices could never take away sins (Hebrews 10:4). Christ’s death on the cross accomplished what the Law could not, and so, by His death, Jesus took the Law of Moses out of the way. We do not go to Mt. Sinai for redemption; we go to Calvary. The Law of Moses identified sin, but it is by the gospel of Christ that we are forgiven of them (Romans 1:16-17). We are children of God through faith, not through the works of the law (Galatians 3:24-29). And, our eternal inheritance is dispensed according to the new covenant of Christ, not by the old covenant that has passed away (Hebrews 9:16-22; 8:7-13).
3 And I testify again to every man who becomes circumcised that he is a debtor to keep the whole law. 4 You have become estranged from Christ, you who attempt to be justified by law; you have fallen from grace. (Galatians 5:3–4, NKJV)
Binding any portion of the Old Testament Law of Moses upon Christians is totally incompatible with the gospel of Christ. The Law of Moses was only given to the nation of Israel; it was never a universal law given to all nations (Deut. 5:1-3). Paul was addresses a false doctrine being advanced by some Jewish Christians, which compelled Gentiles to be circumcised and keep the Law of Moses in order to be saved (Acts 15:1ff). This teaching perverted the gospel being preached by the apostles (Gal. 1:6-9). The result of believing and advancing this false doctrine was that Christians were severed from Christ; they were “fallen from grace.” This clear statement by the apostle Paul shows that it is possible for Christians to lose their salvation. This happens, not because Christ does not have the power to save the Christian, but because the Christian chooses to believe and follow error instead of truth. Sin will not be rewarded with heaven. The belief that Christians cannot fall away and be lost is a false, deceptive doctrine.