Titus 1:15-16

1:15 All is pure to those who are pure. But to those who are corrupt and unbelieving, nothing is pure, but both their minds and consciences are corrupted. 1:16 They profess to know God but with their deeds they deny him, since they are detestable, disobedient, and unfit for any good deed.

Titus 2:14

2:14 He gave himself for us to set us free from every kind of lawlessness and to purify for himself a people who are truly his, who are eager to do good.