522. That all evil, unless removed, remains in man, and that man cannot be saved if he remains in his evils, follows of itself. That no evil can be removed except by the Lord, and except in those who believe in Him and love the neighbor, can be clearly seen from what has already been said, especially from the following in the chapter on Faith.
The Lord, charity, and faith make one, like life, will, and understanding, and if they are divided, each perishes like a pearl reduced to powder.
And from this:
The Lord is charity and faith in man, and man is charity and faith in the Lord.
But it is asked, How can man enter into this union? The reply is, that he cannot, unless to some extent he removes his evils by repentance. It is said that man must remove them, because this is not done by the Lord directly, apart from man's co-operation; which is also fully shown in that same chapter, and in that following on Freedom of Choice.