1 Corinthians 14:20-25

New International Version - UK

²⁰ Brothers and sisters, stop thinking like children. In regard to evil be infants, but in your thinking be adults. ²¹ In the Law it is written:

²² Tongues, then, are a sign, not for believers but for unbelievers; prophecy, however, is not for unbelievers but for believers. ²³ So if the whole church comes together and everyone speaks in tongues, and enquirers or unbelievers come in, will they not say that you are out of your mind? ²⁴ But if an unbeliever or an enquirer comes in while everyone is prophesying, they are convicted of sin and are brought under judgment by all, ²⁵ as the secrets of their hearts are laid bare. So they will fall down and worship God, exclaiming, ‘God is really among you!’