14:13 So then, one who speaks in a tongue should pray that he may interpret. 14:14 If I pray in a tongue, my spirit prays, but my mind is unproductive. 14:15 What should I do? I will pray with my spirit, but I will also pray with my mind. I will sing praises with my spirit, but I will also sing praises with my mind. 14:16 Otherwise, if you are praising God with your spirit, how can someone without the gift say “Amen” to your thanksgiving, since he does not know what you are saying? 14:17 For you are certainly giving thanks well, but the other person is not strengthened.
14:26 What should you do then, brothers and sisters? When you come together, each one has a song, has a lesson, has a revelation, has a tongue, has an interpretation. Let all these things be done for the strengthening of the church.