Matthew 26:52

But all who use the sword do not perish by the sword; of those who have used the sword either judicially, or in self-defence against robbers, fever or accident carries off the greater part. Though if according to this every one who uses the sword shall perish by the sword, justly was the sword now drawn against those who were using the same for the promotion of crime.

The Lord then bids him return his sword into its sheath, because He would destroy them by no weapon of man, but by the sword of His mouth.

But another saith, that they moreover asked, "Shall we smite?" but that He forbad it, and healed the man, and rebuked His disciple, and threatened, that He might move him to obedience. "For all they that take the sword," He said, "shall die with the sword." And he adds a reason, saying, "Think ye that I cannot pray to my Father, and He shall presently give me more than twelve legions of angels? But that the Scriptures might be fulfilled." By these words He quenched their anger, indicating that to the Scriptures also, this seemed good. Wherefore there too He prayed, that they might take meekly what befell Him, when they had learnt that this again is done according to God's will. And by these two things, He comforted them, both by the punishment of them that are plotting against Him, "For all they," He saith, "that take the sword shall perish with the sword;" and by His not undergoing these things against His will, "For I can pray, He saith, "to my Father." And wherefore did He not say, "Think ye that I cannot destroy them all?" Because He was more likely to be believed in saying what He did say; for not yet had they the right belief concerning Him. And a little while before He had said, "My soul is exceeding sorrowful even unto death," and, "Father, let the cup pass from me;" and He had appeared in an agony and sweating, and strengthened by an angel. Since then He had shown forth many tokens of human nature, He did not seem likely to speak so as to be believed, if He had said, "Think ye that I cannot destroy them." Therefore He saith, "What, think ye that I cannot pray to my Father?" And again He speaks it humbly, in saying, "He will presently give me twelve legions of angels." For if one angel slew one hundred and eighty-five armed thousands, what need of twelve legions against a thousand men? But He frames His language with a view to their terror and weakness, for indeed they were dead with fear. Wherefore also He brings against them the Scriptures, saying, "How then shall the Scriptures be fulfilled?" alarming them by this also. For if this be approved by the Scriptures, do ye oppose and fight against them?

With what sword then shall he perish, that takes the sword? By that fiery sword which waves before the gate of paradise, and that sword of the Spirit which is described in the armour of God.

(cont. Faust. xxvii. 70.) That is, every one who uses the sword. And he uses the sword, who, without the command or sanction of any superior, or legitimate authority, arms himself against man's life. For truly the Lord had given commandment to His disciples to take the sword, but not to smite with the sword. Was it then at all unbeseeming that Peter after this sin should become ruler of the Church, as Moses after smiting the Egyptian was made ruler and chief of the Synagogue? For both transgressed the rule not through hardened ferocity, but through a warmth of spirit capable of good; both through hatred of the injustice of others; both sinned through love, the one for his brother, the other for his Lord, though a carnal love.