But when a stronger than he,.... By whom is meant Christ, who is the mighty God, the Almighty; and appears to be so, in the creation of all things, in upholding them by the word of his power, in the government of the world, and the works of providence, in the redemption of his people from sin, Satan, and the law, and in the conversion of them, by the efficacy of his grace, and in the preservation of them by his power; and who is manifestly stronger than Satan; not only by these instances, but by what follows:
shall come upon him; as he did in person, when he dispossessed him from the bodies of men; and does by his Spirit in conversion, when he enters into his palace, the heart of man, binds him, and looses men from him, and turns them from the power of Satan, to God, and sets up a throne of grace, where he himself dwells and reigns: so he comes upon him as an adversary, and often at an unawares; and always with great power and strength, and succeeds: Satan came upon Christ in the wilderness, in the garden, and on the cross, and attacked him, but without success; whence it is clear, that he is stronger than he:
and overcame him; he overcame him in the wilderness, and obliged him to retreat; and on the cross, when he obtained a complete victory over him, destroyed him, his principalities and powers, and all his works, and led him captive; and in conversion, so as to deliver his people from him, that were led captive by him, as that he can never regain his dominion over them more; and though he is suffered to tempt them; he cannot destroy them; and the saints shall overcome him at last, and have him bruised under their feet: and at the same time,
he taketh from him all his armour, wherein he trusted; as his temptations, which he himself repelled in the wilderness, and wrenched out of his hands, and made them useless, and he gives power to his people to resist them, and succours them under them, and delivers them out of them; and also the sins of men, which he took away on the cross, when he bore them, and the punishment of them there: and in conversion, he greatly weakens the power of sin, and takes away the dominion of it; and though the being of it is not removed, hence Satan has something to work upon, yet its power is so far gone, that neither that nor Satan, can destroy such who are truly called by the grace of God:
and divideth his spoils: he spoils his house, the heart of man, from being any longer a palace for him, and his goods, his mind and conscience, which are enlightened and awakened, and purged: or by his spoils are meant, the souls of men; which are taken as a prey out of his hands, and become trophies of victorious grace.

a stronger than he--Christ: Glorious title, in relation to Satan!
come upon him and overcome him--sublimely expressing the Redeemer's approach, as the Seed of the woman, to bruise the Serpent's head.
taketh from him all his armour--"his panoply," "his complete armor." Vain would be the victory, were not the means of regaining his lost power wrested from him. It is this that completes the triumph and ensures the final overthrow of his kingdom. The parable that immediately follows (Luke 11:24-26) is just the reverse of this. (See on Matthew 12:43-45.) In the one case, Satan is dislodged by Christ, and so finds, in all future assaults, the house preoccupied; in the other, he merely goes out and comes in again, finding the house "EMPTY" (Matthew 12:44) of any rival, and all ready to welcome him back. This explains the important saying that comes in between the two parables (Luke 11:23). Neutrality in religion there is none. The absence of positive attachment to Christ involves hostility to Him.