1 Corinthians 14:19-25

Haweis(i) 19 but in the church I had rather speak five words with my understanding, that I may instruct others also, than ten thousand words in an unknown tongue. 20 Brethren, be not children in your minds: though in naughtiness be ye children, but in your minds be men complete. 21 In the law it is written, "That with other tongues, and with other lips, will I speak to this people: and even thus will they not attend to me, saith the Lord." 22 Wherefore tongues are for a sign, not to those that believe, but to those who do not believe: but the gift of prophecy is not for those who are infidels, but for believers. 23 If then the whole church assemble together in the same place, and all speak different tongues, and there come in illiterate persons, or infidels, will they not say ye are mad? 24 But if all prophesy, and any infidel or illiterate person come in, he receives conviction from all, he is judged of all: 25 and thus the secrets of his heart are made manifest; and so falling down on his face, he will worship God, declaring that God verily is among you.