to another performance of miracles, to another prophecy, and to another discernment of spirits, to another different kinds of tongues, and to another the interpretation of tongues.

So then, tongues are a sign not for believers but for unbelievers. Prophecy, however, is not for unbelievers but for believers.

Now, brothers and sisters, if I come to you speaking in tongues, how will I help you unless I speak to you with a revelation or with knowledge or prophecy or teaching?