1 Corinthians 14:10-14

14:10 There are probably many kinds of languages in the world, and none is without meaning. 14:11 If then I do not know the meaning of a language, I will be a foreigner to the speaker and the speaker a foreigner to me. 14:12 It is the same with you. Since you are eager for manifestations of the Spirit, seek to abound in order to strengthen the church.

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.