'Three' in the Bible

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

But now abideth faith, hope, love, these three; and the greatest of these is love.

If any man speaketh in a tongue, let it be by two, or at the most three, and that in turn; and let one interpret:

And let the prophets speak by two or three, and let the others discern.