What does 1 Corinthians 14:7 mean?
Apparently, speaking in tongues without anyone to interpret had become a normal part of the worship services in Corinth. Paul is showing why, in this case, the use of the gift of prophecy is far better than the display of the gift of tongues.Paul does not dismiss those given this gift as fakes. He has acknowledged that this gift from God can bring genuine benefit to the spiritual life of the speaker, even when no interpretation of what he or she is saying is available. The problem is with using the gift in church without interpretation. In that case, Paul insists, the gift does not benefit anyone else.
Perhaps those speaking in tongues imagined their display of God's power as beautiful on its own, as a musical performance might be. Paul counters that idea with the illustration in this verse. If nobody can understand what is being spoken, then to hear tongues spoken is like listening to music played without a melody. Just hearing flutes and harps produce random sounds in random order, not guided by any human mind, isn't pleasant to listen to. It is simply noise.