Berean Study Bible (BSB) - Judges 4:21 >

But as he lay sleeping from exhaustion, Heber’s wife Jael took a tent peg, grabbed a hammer, and went silently to Sisera. She drove the peg through his temple and into the ground, and he died.

Jewish Publication Society of America Version (JPS1917) - Judges 4:21 >

Then Jael Heber's wife took a tent-pin, and took a hammer in her hand, and went softly unto him, and smote the pin into his temples, and it pierced through into the ground; for he was in a deep sleep; so he swooned and died.