Titus 1:15,16
15To the pure, all things are pure, but to those who are corrupted and do not believe, nothing is pure. In fact, both their minds and consciences are corrupted. 16They claim to know God, but by their actions they deny him. They are detestable, disobedient and unfit for doing anything good.
2 Timothy 2:20-24
20In a large house there are articles not only of gold and silver, but also of wood and clay; some are for noble purposes and some for ignoble. 21If a man cleanses himself from the latter, he will be an instrument for noble purposes, made holy, useful to the Master and prepared to do any good work. 22Flee the evil desires of youth, and pursue righteousness, faith, love and peace, along with those who call on the Lord out of a pure heart. 23Don't have anything to do with foolish and stupid arguments, because you know they produce quarrels. 24And the Lord's servant must not quarrel; instead, he must be kind to everyone, able to teach, not resentful.
1 John 3:1-3
1How great is the love the Father has lavished on us, that we should be called children of God! And that is what we are! The reason the world does not know us is that it did not know him. 2Dear friends, now we are children of God, and what we will be has not yet been made known. But we know that when he appears, we shall be like him, for we shall see him as he is. 3Everyone who has this hope in him purifies himself, just as he is pure.