'White washed' in the Bible

"Woe to you, experts in the law and you Pharisees, hypocrites! You are like whitewashed tombs that look beautiful on the outside but inside are full of the bones of the dead and of everything unclean.

Then Paul said to him, "God is going to strike you, you whitewashed wall! Do you sit there judging me according to the law, and in violation of the law you order me to be struck?"