'Five' in the Bible

Their mission was not to kill, but to cause awful agony for five months; and this agony was like that which a scorpion inflicts when it stings a man.

They had tails like those of scorpions, and also stings; and in their tails lay their power of injuring mankind for five months.

And they are seven kings: five of them have fallen, and the one is still reigning. The seventh has not yet come, but when he comes he must continue for a short time.