Ezra
1 Chronicles 27:23ESV·traditional attribution

David did not count those below twenty years of age, for the LORD had promised to make Israel as many as the stars of heaven.

Matthew Henry Presbyterian @wholebiblehenry

We have here an account, I. Of the princes of the tribes. Something of the ancient order instituted by Moses in the wilderness was still kept up, that every tribe should have its prince or chief. It is probable that it was kept up all along, either by election or by succession, in the same family; and those are here named who were found in...

Commenting on 1 Chronicles 27:16-34

John Gill Reformed Baptist @doctorgill

But David took not the number of them from twenty years old and under,.... Only those that were twenty years and upwards; but, according to Cornelius Bertram (k), he numbered them that were under twenty, though but sixteen, seventeen, eighteen, or nineteen years of age, provided they were of robust bodies, and of a tall stature, and able to bear arms; which he takes to...

Jamieson-Fausset-Brown Reformed @jfbcommentary

But David took not the number of them from twenty years old and under--The census which David ordered did not extend to all the Israelites; for to contemplate such an enumeration would have been to attempt an impossibility (Gen 28:14), and besides would have been a daring offense to God.