en_tn/1ch/27/23.md

those twenty years old or younger

"people 20 years old or younger" (See: rc://en/ta/man/translate/translate-numbers)

to increase Israel like the stars of heaven

This speaks of the number of people in Israel increasing as if they would become as numerous as the stars. AT: "to increase the number of people in Israel to be as many as the stars in the heavens" (See: rc://en/ta/man/translate/figs-simile)

increase Israel

Here "Israel" represents the people who live there. AT: "increase the population of Israel" (See: rc://en/ta/man/translate/figs-metonymy)