Old Testament readings use the Septuagint , the Scripture the apostles quoted. Masoretic numbering shown for reference.Learn why
WEB

Numbers 8:24

“This is what is assigned to the Levites: from twenty-five years old and upward they shall go in to wait on the service in the work of the Tent of Meeting;

Parallel Translations

LXXView canonical →
This is the [ordinance] for the Levites; From five and twenty years old and upward, they shall go in to minister in the tabernacle of witness.
Brenton's Septuagint Translation
LXX2012View canonical →
This is the [ordinance] for the Levites; From five and twenty years old and upward, they shall go in to minister in the tabernacle of witness.
Septuagint in American English (2012)
KJVView canonical →
This is it that belongeth unto the Levites: from twenty and five years old and upward they shall go in to wait upon the service of the tabernacle of the congregation:
King James Version

Cross References

Cross references via openbible.info (CC-BY)