1 Corinthians 14:4
4 The one who speaks in a tongue builds up himself, but the one who prophesies builds up the church.
1 Corinthians 14:13
13 Therefore, one who speaks in a tongue should pray that he may interpret.
1 Corinthians 14:14
14 For if I pray in a tongue, my spirit prays but my mind is unfruitful.
1 Corinthians 14:19
19 Nevertheless, in church I would rather speak five words with my mind in order to instruct others, than ten thousand words in a tongue.
1 Corinthians 14:27
27 If any speak in sa tongue, let there be only two or at most three, and each in turn, and let someone interpret.