4:21 Then Jael Heber's wife took a {k} nail of the tent, and took an hammer in her hand, and went softly unto him, and smote the nail into his temples, and fastened it into the ground: for he was fast asleep and weary. So he died.
(k) That is, the pin or stake, by which it was fastened to the ground.
4:21 A nail of the tent - Wherewith they used to fasten the tent, which consequently was long and sharp. This might seem a very bold attempt, but it must be considered, that she was encouraged to it, by observing that the heavens and all the elements conspired against him, as one devoted to destruction. In the following son, Deborah doth not commend Jael's words, ver.18. Turn in my Lord, fear not; but only her action: touching which, this one consideration may abundantly suffice to stop the mouths of objectors. It cannot be denied, that every discourse which is recorded in scripture, is not divinely inspired, because some of them were uttered by the devil, and others by holy men, but mistaken. This being so, the worst that any can infer from this place is, that this song, tho' indited by a good woman, was not divinely inspired, but only composed by a person transported with joy for the deliverance of God's people, but subject to mistake; who therefore, out of zeal to commend the instrument of so great a deliverance, might overlook the indirectness of the means, and commend that which should have been disliked, And if they farther object, that it was composed by a prophetess, and therefore must be divinely inspired; it may be replied, that every expression of a true prophet was not divinely inspired; as is evident from Samuel's mistake concerning Eliab, whom he thought to be the Lord's anointed, 1Sam 16:6. This is said upon supposition that Jael acted deceitfully in this affair; but if we suppose, which is much more likely, that Jael fully intended to afford Sisera the shelter and protection which he sought of her, but was afterwards by the immediate direction of heaven ordered to kill him, the whole difficulty vanishes, and the character both of Jael and of Deborah remains unimpeached.
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, Isa 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.