'Twelve' in the Bible

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

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 one thousand men, and the men of Tob twelve thousand men.

Moreover Ahithophel said to Absalom, "Let me now choose twelve thousand men, and I will arise and pursue after David tonight.