1 Corinthians 14:16-19

Otherwise, if you are praising God in your spirit, how could someone without the gift participate by adding his “amen” to your giving of thanks, since he doesn’t have a clue of what you’re saying? Your praise to God is admirable, but it does nothing to strengthen and build up others. I give thanks to God that I speak in tongues more than all of you, but in the church setting I would rather speak five words that can be understood than ten thousand exotic words in a tongue. That way I could have a role in teaching others.