If anyone is speaking in tongues, let there be only two, or at most three, and then in turn, and let someone interpret
Other versions
King James Version
If any man speak in an unknown tongue, let it be by two, or at the most by three, and that by course; and let one interpret. English Standard Version
If any speak in a tongue, let there be only two or at most three, and each in turn, and let someone interpret.New International Version
If anyone speaks in a tongue, two--or at the most three--should speak, one at a time, and someone must interpret.