1 Chronicles 27:1, 23-24

This is the list of Israelite generals and captains, and their officers, who served the king by supervising the army divisions that were on duty each month of the year. Each division served for one month and had 24,000 troops.

When David took his census, he did not count those who were younger than twenty years of age, because the LORD had promised to make the Israelites as numerous as the stars in heaven. Joab son of Zeruiah began the census but never finished it because the anger of God fell on Israel. The total number was never recorded in King David’s official records.