thirty years: Num 4:3 to perform the service: Heb. to war the warfare, Num 4:3, Isa 63:1-4, Rom 7:14-24, 1Co 9:7, 2Co 6:7, 2Co 10:3-5, Eph 6:10-19, Gal 5:17, Gal 5:24, 1Ti 1:18, 2Ti 2:3, 2Ti 2:4, 2Ti 4:7 Reciprocal: Num 4:30 - service Num 4:35 - General Num 4:47 - From thirty Num 8:24 - from twenty Num 8:25 - cease waiting upon the service thereof 1Ch 23:3 - the Levites