Num Numbers, chapter Book of Numbers, chapter 1
Take the sum of all the congregation of the children of Israel by their families, and houses, and the names of every one, as many as are of the male sex, Exo 30:12From twenty years old and upwards, of all the men of Israel fit for war, and you shall number them by their troops, thou and Aaron. 1Ch 25:28; 2Ch 25:5