en_tn_lite_do_not_use/num/03/46.md

For the redemption of

The noun "redemption" can be translated with the verb "redeem." Alternate translation: "to redeem" (See: rc://en/ta/man/jit/figs-abstractnouns)

273 firstborn

"two hundred and seventy-three firstborn" (See: rc://en/ta/man/jit/translate-numbers)

sons of Israel

Only the firstborn males were counted.

who exceed the number of the Levites

This means that there are 273 more firstborn males among the other tribes of the Israelites than there are total number of Levite males.