A person who claims to believe but refuses to repent from his sins and be transformed is not being healed/saved from his sins.
Yup. 1st John 3:2-3
2 Beloved, now are we the sons of God, and it doth not yet appear what we shall be: but we know that, when he shall appear, we shall be like him; for we shall see him as he is.
3
And every man that hath this hope in him purifieth himself, even as he is pure.
Followed by
4 Whosoever committeth sin transgresseth also the law: for sin is the transgression of the law.
5 And ye know that he was manifested to take away our sins; and in him is no sin.
6 Whosoever abideth in him sinneth not: whosoever sinneth hath not seen him, neither known him.
I feel that abiding in him is a process. Seeing him and knowing him is a process, begun by him. I like this Internet Proverb:
An old Cherokee is teaching his grandson about life. “A fight is going on inside me,” he said to the boy. “It is a terrible fight and it is between two wolves. One is evil – he is anger, envy, sorrow, regret, greed, arrogance, self-pity, guilt, resentment, inferiority, lies, false pride, superiority, and ego.” He continued, “The other is good – he is joy, peace, love, hope, serenity, humility, kindness, benevolence, empathy, generosity, truth, compassion, and faith. The same fight is going on inside you – and inside every other person, too.” The grandson thought about it for a minute and then asked his grandfather, “Which wolf will win?”
The old Cherokee simply replied, “The one you feed.”
The thing is, there were never two wolves with me before, there was only one. To be saved, to be born again, to be baptized with the Holy Spirit, to seek His indwelling is not (in my experience) a time to relax. I spent my whole life feeding the wrong wolf, I have to learn to starve it and feed the other. Even the knowledge of how to do that though, comes from God, some of it through personal revelation and scripture and some of it through the traditions and Sacraments of the Church which are good and beneficial and commended to all believers. It is very much like a patient seeing a doctor. He is diagnosed and given a cure. If he believes in the Doctor and follows his instructions, his disease will go into remission and he will live, though he will be in treatment his whole life, getting better and better instead of worse and worse. The 'works' that James speak of naturally follow from someone who is getting better and better, to the glory of God who is healing them. Someone who is getting worse and worse also has 'works', but they are works of a different sort.
John 3:19-21
19 And this is the condemnation, that light is come into the world, and men loved darkness rather than light, because their deeds were evil.
20 For every one that doeth evil hateth the light, neither cometh to the light, lest his deeds should be reproved.
21 But he that doeth truth cometh to the light, that his deeds may be made manifest,
that they are wrought in God.