1 Chronicles 27:1, 23-24

Now the children of Israel after their number, to wit, the chief fathers and captains of thousands and hundreds, and their officers that served the king in any matter of the courses, which came in and went out month by month throughout all the months of the year, of every course were twenty and four thousand.

But David took not the number of them from twenty years old and under: because the LORD had said he would increase Israel like to the stars of the heavens. Joab the son of Zeruiah began to number, but he finished not, because there fell wrath for it against Israel; neither was the number put in the account of the chronicles of king David.