Then, with all of these scriptures that you quote and all of your reasonings on work being the only thing that will save us then you have failed to explain what the purpose of Jesus actually dying was if his death doesn't save us, only our works. If his death has never saved us and it's only works then it's funny that no man has ever lived his life by the Mosaic Law completely and fully. If there were any works that we could do to gain salvation it would be living by the Mosaic Law to its fullest. Yet the Bible is clear that no man has ever done that. So that proves that works are pointless since the only work that we could do has never been accomplished successfully. The Mosaic Law was established partially to prove to us that there is NOTHING that man can do to earn his salvation. That the only way we can be saved is through Jesus.
So if sin seperates us from God and prevents us from having a relationship with Him....and Jesus died for those sins and removed them....that would mean that we now have a relationship with God and we are one with Him...so why the need for other things being added to this? If our sins were removed by his death what else do we need to prove? There is nothing that we could prove to God because is son did all the work for us. We only need to accept that he did this work and that, if it wasn't for him, we would be screwed.
Romans 3:21-31(NIV)
21 But now a righteousness from God, apart from law, has been made known, to which the Law and the Prophets testify. 22 This righteousness from God comes through faith in Jesus Christ to all who believe. There is no difference, 23 for all have sinned and fall short of the glory of God, 24 and are justified freely by his grace through the redemption that came by Christ Jesus. 25 God presented him as a sacrifice of atonement, [1] through faith in his blood. He did this to demonstrate his justice, because in his forbearance he had left the sins committed beforehand unpunished-- 26 he did it to demonstrate his justice at the present time, so as to be just and the one who justifies those who have faith in Jesus. 27 Where, then, is boasting? It is excluded. On what principle? On that of observing the law? No, but on that of faith. 28 For we maintain that a man is justified by faith apart from observing the law. 29 Is God the God of Jews only? Is he not the God of Gentiles too? Yes, of Gentiles too, 30 since there is only one God, who will justify the circumcised by faith and the uncircumcised through that same faith. 31 Do we, then, nullify the law by this faith? Not at all! Rather, we uphold the law.
Romans 4:1-3 (NIV)
1 What then shall we say that Abraham, our forefather, discovered in this matter? 2 If, in fact, Abraham was justified by works, he had something to boast about--but not before God. 3 What does the Scripture say? "Abraham believed God, and it was credited to him as righteousness."
Romans 4:13-15 (NIV)
13 It was not through law that Abraham and his offspring received the promise that he would be heir of the world, but through the righteousness that comes by faith. 14 For if those who live by law are heirs, faith has no value and the promise is worthless, 15 because law brings wrath. And where there is no law there is no transgression.
So what is being said here is that, like Abraham, our salvation can not be justified by works because from works comes boasting of works. Only through Abraham's faith that God would do what He said he was going to do did Abraham do what he needed to do. Therefor Abraham's works were only as a result of his faith that God would keep his promise. So faith moved him to do what he needed to do. He did not perform his works to PROVE his faith! His faith moved him to perform his works! And that his works had NO HAND in earning his salvation. Abraham was credited as being righteous not through his works but because "Abraham believed God", aka FAITH! We are to be like Abraham.