When a strong man armed keeps his palace, his goods are in peace:
All Commentaries on Luke 11:21 Go To Luke 11
Cyril of Alexandria
AD 444
He has conquered the ruler of this world. Having, so to speak, hamstrung him and stripped him of the power he possessed, he has given him over for a prey to his followers. He says, “The strong man, being armed, guards his house; all his goods are in peace. But when one who is stronger than he shall come on him and overcome him, he takes away all his armor wherein he trusted and divides his spoil.” This is a plain demonstration and type of the matter depicted after the manner of human affairs…. Before the coming of the Savior, he was in great power, driving and shutting up in his own stall flocks that were not his own but belonging to God over all. He was like some voracious and most insolent robber. Since the Word of God who is above all, the Giver of all might and Lord of powers attacked him, having become man, all his goods have been plundered and his spoil divided. Those of old who had been ensnared by him into ungodliness and error have been called by the holy apostles to the acknowledgment of the truth and been brought near to God the Father by faith in his Son. Commentary on Luke, Homily