Numbers 4:23

from thirty to fifty years old, counting everyone who comes to serve in the work at the Tent of Meeting.
BSB · Berean Standard Bible
From thirty years old and upward until fifty years old shalt thou number them; all that enter in to perform the service, to do the work in the tabernacle of the congregation.

Note to perform…: Heb. to war the warfare

KJV · King James Version
you shall count them from thirty years old and upward until fifty years old: all who enter in to wait on the service, to do the work in the Tent of Meeting.
WEB · World English Bible
from thirty years old and upward until fifty years old shalt thou number them; all that enter in to wait upon the service, to do the work in the tent of meeting.
ASV · American Standard Version

Related passages

From the Treasury of Scripture Knowledge, grouped by the word they explain.

thirty years
Numbers 4:3
to perform the service
Heb. to war the warfare.
Numbers 4:3; Isaiah 63:1–4; Romans 7:14–24; 1 Corinthians 9:7; 2 Corinthians 6:7; 2 Corinthians 10:3–5; Ephesians 6:10–19; Galatians 5:17, 24; 1 Timothy 1:18; 2 Timothy 2:3, 4; 2 Timothy 4:7