Few Jews recognized Jesus as the Messiah, and people do not like to change for no good reason. When Jesus made it clear that He was not going to throw off the Roman yoke there was no good reason. The good news of Christianity is believe in Jesus Christ and follow Him as Jesus told the rich young ruler. This is the new covenant, as opposed old covenant of believing in God and doing good works.
Incidentally God’s commandments in the time of Jesus was the Law, the Torah. Do you keep the Sabbath as God commanded ?
Jesus agreed that the rich man kept the commandments so how could he not know God? We are not called to judge (condemn) him. How many of us are willing to sell all that we have and give the money to the poor so we can follow Jesus?
The clearest example of faith bringing salvation is the words of Jesus to the thief on the cross.
Paul wrote Romans to share with that important body of believers his theology. It is not easy reading, but well the worth the effort to know the relationship between faith and works, grace and law, forgiveness and the Holy Spirit.
You are saying that that God is less than humans. Humans should trust in God that God will not break God’s promise of salvation, but God must make God’s promises conditional, because God cannot trust humans to keep their commitment to live right…
You are saying that salvation and the change that the Holy Spirit makes in our lives is apt to be phony and cannot be trusted. Maybe you do not know if I am saved, but surely God knows my heart and knows the reality of my commitment to Jesus. I cannot fool God. Even if somehow I might sneak into heaven when I am unworthy, what would I gain by living where everyone else is praising God and no one believes my lies.
Romans 6:3-11 (NIV2011)
3 Or don’t you know that all of us who were baptized into Christ Jesus were baptized into his death?
4 We were therefore buried with him through baptism into death in order that, just as Christ was raised from the dead through the glory of the Father, we too may live a new life.
5 For if we have been united with him in a death like his, we will certainly also be united with him in a resurrection like his.
6 For we know that our old self was crucified with him so that the body ruled by sin might be done away with, that we should no longer be slaves to sin—
7 because anyone who has died has been set free from sin.
8 Now if we died with Christ, we believe that we will also live with him.
9 For we know that since Christ was raised from the dead, he cannot die again; death no longer has mastery over him.
10 The death he died, he died to sin once for all; but the life he lives, he lives to God.
11 In the same way, count yourselves dead to sin but alive to God in Christ Jesus.
Salvation and faith is not a ticket to heaven, it is life with Immanuel, Jesus Christ, God with us now and forever.
Apparently you do not understand that when we are saved, all of our sin is forgiven, and we are justified by faith so we are worthy of eternal life with God.