1 Corinthians 14:18-25

18I thank 1God I speak in a tongue more than all of you:

19but in [the] assembly I desire to speak five words with my understanding, that I may instruct others also, [rather] than ten thousand words in a tongue.

20Brethren, be not children in [your] minds, but in malice be babes; but in [your] minds be grown [men].

21It is written in the law, By people of other tongues, and by strange lips, will I speak to this people; and neither thus will they hear me, saith the Lord.

22So that tongues are for a sign, not to those who believe, but to unbelievers; but prophecy, not to unbelievers, but to those who believe.

23If therefore the whole assembly come together in one place, and all speak with tongues, and simple [persons] enter in, or unbelievers, will not they say ye are mad?

24But if all prophesy, and some unbeliever or simple [person] come in, he is convicted of all, he is judged of all;

25the secrets of his heart are manifested; and thus, falling upon [his] face, he will do homage to 2God, reporting that 3God is indeed amongst you.