The biblical criterion for misplaced shame says, don't feel shame for something that honors God, no matter how weak or foolish or wrong it makes you look in the eyes of men. And don't feel shame for bad circumstances where you don't share in dishonoring God. The biblical criterion for well-placed shame says, DO feel shame for having a hand in anything that dishonors God, no matter how strong or wise or right it makes you look in the eyes of men.
John Piper