Numbers 1:3 - Clarke's commentary and critical notes on the Bible

From twenty years old and upward, all that are able to go forth to war in Israel: thou and Aaron shall number them by their armies. From twenty years old and upward - In this census no women were reckoned, nor children, nor strangers, nor the Levites, nor old men, which, collectively, must have formed an immense multitude; the Levites alone amounted to 22,300. True-born Israelites only are reckoned; such as were able to carry arms, and were expert for war.