You believe that there is one God. There are two kinds of faith. What is needed is more than just knowing about God, what is needed is the true living faith that rests confidently in God's mercy and that proves it is alive by bearing fruit in good works. It does not depend upon my weaknesses and deficiencies, but upon the faith that clings to God. We are not saved by our good works but by the work Christ has done for us, and this work of Christ is accepted, is made ours, by faith.
Good works are merely evidence that one's faith is alive.
Even if good works are there, must be there, it is not they, that save. But you have committed sins of malice after you became a child of God, and that is proof that you have lost the saving faith and thus cut yourself off from the grace of God. Even if that should have happened, the grace of God has been greater than my sins. God has not let me die in my sins. This is a very important point.