'Three' in the Bible

Neither let us commit fornication, as some of them committed, and fell in one day three and twenty thousand.

And now abideth faith, hope, charity, these three; but the greatest of these is charity.

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.

Let the prophets speak two or three, and let the other judge.