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

Numbers 1:45

So were all those that were numbered of the children of Israel, by the house of their fathers, from twenty years old and upward, all that were able to go forth to war in Israel;

Parallel Translations

LXXView canonical →
And the whole numbering of the children of Israel with their host from twenty years old and upward, every one that goes out to set himself in battle array in Israel, came to
Brenton's Septuagint Translation
LXX2012View canonical →
And the whole numbering of the children of Israel with their host from twenty years old and upward, every one that goes out to set himself in battle array in Israel, came to
Septuagint in American English (2012)
WEBView canonical →
So all those who were counted of the children of Israel by their fathers’ houses, from twenty years old and upward, all who were able to go out to war in Israel—
World English Bible