'Unbelievers' in the Bible

But brother goeth to law with brother, and that before the unbelievers.

If one of the unbelievers invites you over and you want to go, eat everything that is set before you, without raising questions of conscience.

You know that when you were unbelievers, you were enticed and led astray to worship idols that couldn't even speak.

It follows that speaking in other languages is intended as a sign, not for believers but for unbelievers. But prophecy is not for unbelievers but for believers.

If therefore the whole church be come together into one place, and all speak with tongues, and there come in those that are unlearned, or unbelievers, will they not say that ye are mad?