Old Testament readings use the Septuagint , the Scripture the apostles quoted. Masoretic numbering shown for reference.Learn why
LXX2012

Psalms 104:36

He struck also every firstborn of their land, the first fruits of all their labor.

Parallel Translations

LXXView canonical →
He smote also every first-born of their land, the first-fruits of all their labour.
Brenton's Septuagint Translation