(1Co 14:18) “I thank my God, I speak with tongues more than ye all: (19) Yet in the church I had rather speak five words with my understanding, that by my voice I might teach others also, than ten thousand words in an unknown tongue.” Whether he is referring to his own natural ability or the gift is beside the point. The point is that in the assembly the purpose is to minister to the hearers. That would include our conversations.