The salvation of Jews is not just a matter of faith; faith is complete trust in something; "we exercise faith" does not mean your faith in saving; we have been practicing human faith; even non-Jews believe in their idols. The elect are the teachings given to him by Adam; this is the teaching of Elohim; I don't understand his view of circumcision; circumcision is a ritual that makes them as a nation establishes a special relationship with Jehovah. This is the sign of God's covenant with Abraham.God did not promise everyone the confidence to be saved, but he did prophesy. Indeed, the New Testament teaches that saints take the sign of the covenant for granted. The gospel is being spread to the ends of the earth through God's chosen people. They broke the covenant; God destroyed the city of Jerusalem and preached the gospel to the Gentiles; God appeared to Abram and chose his descendants to receive salvation; Paul was circumcised; the revealed apostle was circumcised. 

He suggested that Timothy should be circumcised to avoid problems that may arise in the ancient church. They just want to go back to the Old Testament and require members of the New Testament to observe the rules of ceremonial.Circumcision is the key word of the Old Testament norms. Since Pentecost, the New Testament has been preaching, and true repentance is preached in the name of Christ. This means that only through the grace of faith in Christ can eternal salvation be obtained. Covenant repentance for eternal salvation is different, because Christ enjoyed life and fulfilled the requirements of the law. The old covenant law was fulfilled faithfully in Christ, instead of the ritual requirements of voluntary obedience. He now only trusts in Christ. Paul said that we didn't have to live by the flesh, but by the Holy Spirit. Go back to Christ and surrender our sins to Him. Just believing that his work is the only remedy for sin.They no longer need to perform rituals to obey. There are two aspects to faith. One is to understand Christ by believing and relying solely on the work of Christ. We use our childhood beliefs, and we give him eternal honor for his perfect work of eternal salvation. We surrender sincerely, relying only on His satisfactory work. Anyone who comes alone faces the threat of an eternal curse. Paul taught Jewish believers that they did not need to obey ceremonial laws to communicate their salvation. If a member of the Old Testament Israel Covenant did not participate in the sacrificial system, he would not keep the covenant. 

 But the sacrificial system did not help. He needs circumcision of the heart.But external actions are not evidence of saving faith. Today’s gospel is very simple. What can help a person enter the real church? Are these sacraments? Not a member of the church. But only if Christ is justified by faith can convincingly show that the covenant community accepts grace as a faithful member. If humans take action to obtain and maintain salvation, then the eternal covenant will be cursed. This is why the apostle speaks after the beginning. Are you currently trying to achieve your goals through Spirit through manual efforts? Covenant obedience is the correct use of faith as empirical evidence, proving that we have been declared to have a new nature and rely only on Christ as our only hope of salvation, surrounded by curses.