Then Jael Heber's wife took a tent-pin, and took a hammer in her hand, and went softly to him, and struck the pin into his temples, and it pierced through into the ground; for he was in a deep sleep; so he swooned and died.
Note the vulnerability and dependence of Sisera in Judges 4:19 and his blind self-confidence in Judges 4:20. He thought he was safe and in control, but he was in mortal danger, about to die, and he did not even suspect it. Such is often the case with people, especially the enemies of God’s people (cf. Proverbs 16:18).