2-4. And why? Because it instructs and builds and strengthens. To utter a spiritual language known only to God is to hold converse indeed with God, to allow the Spirit itself to utter its own mysteries, and that is good.
5. I would have you all to speak with such tongues as that; but this spiritual language, the tongue of God, needs interpretation; and through that interpretation man is blessed with something that comforts, consoles, and builds him up.
8. Even the trumpet, made of brass merely, can summon men to battle, the flute and the pipe can move men most variously. But what if their sounds be not understood? What if their stops and notes be so uncertainly handled that there is no recognition of their meaning? Who will arm himself then for the fray?
20. My brethren, you have become as little children in this world, but be not children in understanding, but children only in evil. This speaking with tongues, you say, is a sign, a miracle.
21. Yes, God says, “With other lips and a strange tongue will I speak to this people, and yet will they not hearken to me.” (Is. xxviii. 11-12)
22. They are a sign to those who have no faith, and a sign that is not accepted.