1 Corinthians 9:10

9:10 Or is he not surely speaking for our benefit? It was written for us, because the one plowing and threshing ought to work in hope of enjoying the harvest.

1 Corinthians 12:3

12:3 So I want you to understand that no one speaking by the Spirit of God says, “Jesus is cursed,” and no one can say, “Jesus is Lord,” except by the Holy Spirit.

1 Corinthians 14:6

14:6 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?

1 Corinthians 14:9

14:9 It is the same for you. If you do not speak clearly with your tongue, how will anyone know what is being said? For you will be speaking into the air.