NET
31 when the anger of God flared up against them. He killed some of the strongest of them; he brought the young men of Israel to their knees.
Darby
31 When the anger of God went up against them; and he slew the fattest of them, and smote down the chosen men of Israel.
KJV
31 The wrath of God came upon them, and slew the fattest of them, and smote down the chosen [men] of Israel.