'Double' in the Bible

If the stolen item should in fact be found alive in his possession, whether it be an ox or a donkey or a sheep, he must pay back double.

"If a man gives his neighbor money or articles for safekeeping, and it is stolen from the man's house, if the thief is caught, he must repay double.

In all cases of illegal possessions, whether for an ox, a donkey, a sheep, a garment, or any kind of lost item, about which someone says 'This belongs to me,' the matter of the two of them will come before the judges, and the one whom the judges declare guilty must repay double to his neighbor.

You are to join five curtains by themselves and six curtains by themselves. You are to double over the sixth curtain at the front of the tent.