1 Corinthians 14:27-30

No more than two or three should speak in tongues. They must speak one at a time, and someone must interpret what they say. But if no one is present who can interpret, they must be silent in your church meeting and speak in tongues to God privately. Let two or three people prophesy, and let the others evaluate what is said. But if someone is prophesying and another person receives a revelation from the Lord, the one who is speaking must stop.