1 Corinthians 14:1, 4, 22
1 Corinthians 14:1 ESV
Pursue love, and earnestly desire the spiritual gifts, especially that you may prophesy.
1 Corinthians 14:4 ESV
The one who speaks in a tongue builds up himself, but the one who prophesies builds up the church.
1 Corinthians 14:22 ESV
Thus tongues are a sign not for believers but for unbelievers, while prophecy is a sign not for unbelievers but for believers.