Old Testament readings use the Septuagint , the Scripture the apostles quoted. Masoretic numbering shown for reference.Learn why
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Numbers 8:18

I have taken the Levites instead of all the firstborn among the children of Israel.

Parallel Translations

LXXView canonical →
And I took the Levites in the place of every first-born among the children of Israel.
Brenton's Septuagint Translation
LXX2012View canonical →
And I took the Levites in the place of every firstborn among the children of Israel.
Septuagint in American English (2012)
KJVView canonical →
And I have taken the Levites for all the firstborn of the children of Israel.
King James Version