17 Meanwhile Sisera, running for his life, headed for the tent of Jael, wife of Heber the Kenite. Jabin king of Hazor and Heber the Kenite were on good terms with one another. 18 Jael stepped out to meet Sisera and said, "Come in, sir. Stay here with me. Don't be afraid." So he went with her into her tent. She covered him with a blanket. 19 He said to her, "Please, a little water. I'm thirsty." She opened a bottle of milk, gave him a drink, and then covered him up again. 20 He then said, "Stand at the tent flap. If anyone comes by and asks you, 'Is there anyone here?' tell him, 'No, not a soul.'" 21 Then while he was fast asleep from exhaustion, Jael wife of Heber took a tent peg and hammer, tiptoed toward him, and drove the tent peg through his temple and all the way into the ground. He convulsed and died.
Matthew Henry's Commentary on Judges 4:17-21
Commentary on Judges 4:17-24
(Read Judges 4:17-24)
Sisera's chariots had been his pride and his confidence. Thus are those disappointed who rest on the creature; like a broken reed, it not only breaks under them, but pierces them with many sorrows. The idol may quickly become a burden, Isaiah 46:1; what we were sick for, God can make us sick of. It is probable that Jael really intended kindness to Sisera; but by a Divine impulse she was afterwards led to consider him as the determined enemy of the Lord and of his people, and to destroy him. All our connexions with God's enemies must be broken off, if we would have the Lord for our God, and his people for our people. He that had thought to have destroyed Israel with his many iron chariots, is himself destroyed with one iron nail. Thus the weak things of the world confound the mighty. The Israelites would have prevented much mischief, if they had sooner destroyed the Canaanites, as God commanded and enabled them: but better be wise late, and buy wisdom by experience, than never be wise.