1 Corinthians 14:25

21 It is written in the Law: “By strange tongues and foreign lips I will speak to this people, but even then they will not listen to Me, says the Lord.”

22 Tongues, then, are a sign, not for believers, but for unbelievers. Prophecy, however, is for believers, not for unbelievers.

23 So if the whole church comes together and everyone speaks in tongues, and some who are uninstructed or some unbelievers come in, will they not say that you are out of your minds?

24 But if an unbeliever or uninstructed person comes in while everyone is prophesying, he will be convicted and called to account by all,

25 and the secrets of his heart will be made known. So he will fall facedown and worship God, proclaiming, “God is truly among you!”

26 What then shall we say, brothers? When you come together, everyone has a psalm or a teaching, a revelation, a tongue, or an interpretation. All of these must be done to build up the church.

27 If anyone speaks in a tongue, two, or at most three, should speak in turn, and someone must interpret.

28 But if there is no interpreter, he should remain silent in the church and speak only to himself and God.

29 Two or three prophets should speak, and the others should weigh carefully what is said.

Read all of 1 Corinthians 14