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

LXX

Psalms 77:31

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

Parallel Translations

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