ESV: “Harass the Midianites and strike them down,
NIV: Treat the Midianites as enemies and kill them.
NASB: Be hostile to the Midianites and attack them;
CSB: "Attack the Midianites and strike them dead.
NLT: Attack the Midianites and destroy them,
KJV: Vex the Midianites, and smite them:
NKJV: “Harass the Midianites, and attack them;
