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

Psalms 77:31

then the indignation of God rose up against them, and killed the fattest of them, and overthrew the choice men of Israel.

Parallel Translations

LXXView canonical →
then the indignation of God rose up against them, and slew the fattest of them, and overthrew the choice men of Israel.
Brenton's Septuagint Translation