1 Corinthians 14:13

Wherefore let him that speaketh, &c.— If therefore any of you be fond of speaking languages, by a miraculous power, which he himself was before a stranger to, and which those who have not learnt it can make nothing of; let him beg of God, that, when he comes among such people, he may also be enabled to interpret what he says in their vulgar tongue, that it may not be a heap of unintelligible words to them; but that they may be profited by the discourse.