1 Corinthians 14:21-25

21In 1the Law it is written, “2By men of strange tongues and by the lips of strangers I will speak to this people, and even so they will not listen to Me,” says the Lord. 22So then tongues are for a sign, not to those who believe but to unbelievers; but 3prophecy is for a sign, not to unbelievers but to those who believe. 23Therefore if the whole church assembles together and all speak in tongues, and 4ungifted men or unbelievers enter, will they not say that 5you are mad? 24But if all 6prophesy, and an unbeliever or an 7ungifted man enters, he is 8convicted by all, he is called to account by all; 259the secrets of his heart are disclosed; and so he will 10fall on his face and worship God, 11declaring that God is certainly among you.