1 Corinthians 14:24-25

WNT(i) 24 If, on the other hand, every one is prophesying and an unbeliever or an ungifted man comes in, he is convicted by all and closely examined by all, 25 and the hidden evils of his heart are brought to light. And, as the result, he will fall on his face and worship God, and will report to others that of a truth God is among you.