'Twelve' in the Bible

Then they arose and went over by number: twelve for Benjamin, and for Ish-bosheth the son of Saul, and twelve of the servants of David.

And when the children of Ammon saw that they were become odious to David, the children of Ammon sent and hired the Syrians of Beth-rehob, and the Syrians of Zobah, twenty thousand footmen, and the king of Maacah with a thousand men, and the men of Tob twelve thousand men.

Moreover Ahithophel said unto Absalom, Let me now choose out twelve thousand men, and I will arise and pursue after David this night: