1 Corinthians 14:2-4

14:2 For the one speaking in a tongue does not speak to people but to God, for no one understands; he is speaking mysteries by the Spirit. 14:3 But the one who prophesies speaks to people for their strengthening, encouragement, and consolation. 14:4 The one who speaks in a tongue builds himself up, but the one who prophesies builds up the church.

1 Corinthians 14:23

14:23 So if the whole church comes together and all speak in tongues, and unbelievers or uninformed people enter, will they not say that you have lost your minds?

1 Corinthians 14:27

14:27 If someone speaks in a tongue, it should be two, or at the most three, one after the other, and someone must interpret.

1 Corinthians 14:39

14:39 So then, brothers and sisters, be eager to prophesy, and do not forbid anyone from speaking in tongues.