1 Corinthians 14:2-15

When someone speaks in tongues, no one understands a word he says, because he’s not speaking to people, but to God—he is speaking intimate mysteries in the Spirit. But when someone prophesies, he speaks to encourage people, to build them up, and to bring them comfort. The one who speaks in tongues advances his own spiritual progress, while the one who prophesies builds up the church. I would be delighted if you all spoke in tongues, but I desire even more that you impart prophetic revelation to others. Greater gain comes through the one who prophesies than the one who speaks in tongues, unless there is interpretation so that it builds up the entire church. My dear friends, what good is it if I come to you always speaking in tongues? But if I come with a clear revelation from God, or with insight, or with a prophecy, or with a clear teaching, I can enrich you. Similarly, if musical instruments, such as flutes or stringed instruments, are out of tune and don’t play the arrangement clearly, how will anyone recognize the melody? If the bugle makes a garbled sound, who will recognize the signal to show up for the battle? So it is with you. Unless you speak in a language that’s easily understood, how will anyone know what you’re talking about? You might as well save your breath! I suppose that the world has all sorts of languages, and each conveys meaning to the ones who speak it. But I am like a foreigner if I don’t understand the language, and the speaker will be like a foreigner to me. And that’s what’s happening among you. You are so passionate about embracing the manifestations of the Holy Spirit! Now become even more passionate about the things that strengthen the entire church. So then, if you speak in a tongue, pray for the interpretation to be able to unfold the meaning of what you are saying. For if I am praying in a tongue, my spirit is engaged in prayer but I have no clear understanding of what is being said. So here’s what I’ve concluded. I will pray in the Spirit, but I will also pray with my mind engaged. I will sing rapturous praises in the Spirit, but I will also sing with my mind engaged.