1 Corinthians 14:4-11

4One who 1speaks in a tongue 2edifies himself; but one who 3prophesies 4edifies the church. 5Now I wish that you all 5spoke in tongues, but 6even more that you would prophesy; and greater is one who prophesies than one who 7speaks in tongues, unless he interprets, so that the church may receive 8edifying.

6But now, brethren, if I come to you speaking in tongues, what will I profit you unless I speak to you either by way of 9revelation or of 10knowledge or of 11prophecy or of 12teaching? 7Yet even lifeless things, either flute or harp, in producing a sound, if they do not produce a distinction in the tones, how will it be known what is played on the flute or on the harp? 8For if 13the 14bugle produces an indistinct sound, who will prepare himself for battle? 9So also you, unless you utter by the tongue speech that is clear, how will it be known what is spoken? For you will be 15speaking into the air. 10There are, perhaps, a great many kinds of 16languages in the world, and no kind is without meaning. 11If then I do not know the meaning of the language, I will be to the one who speaks a 1718barbarian, and the one who speaks will be a 19barbarian 20to me.