He who speaks in a tongue builds himself up, but he who prophesies builds up the church.

In the Law it is written: With men of other languages and other lips I will speak to this people; And yet, for all that, they will not hear Me, says the Lord.

Therefore tongues are for a sign, not to those who believe but to unbelievers; but prophesying is not for unbelievers but for those who believe.