Think not that I am come to send peace on earth: I came not to send peace, but a sword.
All Commentaries on Matthew 10:34 Go To Matthew 10
John Chrysostom
AD 407
Again, He sets forth the things that are more painful, and that with great aggravation: and the objection they were sure to meet Him with, He prevents them by stating. I mean, lest hearing this, they should say, For, this then are You come, to destroy both us, and them that obey us, and to fill the earth with war? He first says Himself, I am not come to send peace on earth.
How then did He enjoin them to pronounce peace on entering into each house? And again, how did the angels say, Glory to God in the highest, and on earth peace? Luke 2:14 And how came all the prophets too to publish it for good tidings? Because this more than anything is peace, when the diseased is cut off, when the mutinous is removed. For thus it is possible for Heaven to be united to earth. Since the physician too in this way preserves the rest of the body, when he amputates the incurable part; and the general, when he has brought to a separation them that were agreed in mischief. Thus it came to pass also in the case of that famous tower; for their evil peace Genesis 11:7-8 was ended by their good discord, and peace made thereby. Thus Paul also divided them that were conspiring against him. Acts 23:6-7 And in Naboth's case that agreement was at the same time more grievous than any war. 1 Kings xxi For concord is not in every case a good thing, since even robbers agree together.
The war is not then the effect of His purpose, but of their temper. For His will indeed was that all should agree in the word of godliness; but because they fell to dissension, war arises. Yet He spoke not so; but what says He? I am not come to send peace; comforting them. As if He said, For think not that you are to blame for these things; it is I who order them so, because men are so disposed. Be not ye therefore confounded, as though the events happened against expectation. To this end am I come, to send war among men; for this is my will. Be not ye therefore troubled, when the earth is at war, as though it were subject to some hostile device. For when the worse part is rent away, then after that Heaven is knit unto the better.
And these things He says, as strengthening them against the evil suspicion of the multitude.
And He said not war, but what was more grievous than it, a sword. And if there be somewhat painful in these expressions, and of an alarming emphasis, marvel not. For, it being His will to train their ears by the severity of His words, lest in their difficult circumstances they should start aside, He fashioned His discourse accordingly; lest any one should say it was by flattery He persuaded them, and by concealing the hardships; therefore even to those things which merited to be otherwise expressed, He gave by His words the more galling and painful turn. For it is better to see persons' gentleness in things, than in words.