From whence come wars and fightings among you? come they not hence, even of your lusts that war in your members? From whence come wars and fightings - About the time in which St. James wrote, whether we follow the earlier or the later date of this epistle, we find, according to the accounts given by Josephus, Bell. Jud. lib. ii. c. 17, etc., that the Jews, under pretense of defending their religion, and procuring that liberty to which they believed themselves entitled, made various insurrections in Judea against the Romans, which occasioned much bloodshed and misery to their nation. The factions also, into which the Jews were split, had violent contentions among themselves, in which they massacred and plundered each other. In the provinces, likewise, the Jews became very turbulent; particularly in Alexandria, and different other parts of Egypt, of Syria, and other places, where they made war against the heathens, killing many, and being massacred in their turn. They were led to these outrages by the opinion that they were bound by their law to extirpate idolatry, and to kill all those who would not become proselytes to Judaism. These are probably the wars and fightings to which St. James alludes; and which they undertook rather from a principle of covetousness than from any sincere desire to convert the heathen. See Macknight.
Come they not hence - of your lusts - This was the principle from which these Jewish contentions and predatory wars proceeded, and the principle from which all the wars that have afflicted and desolated the world have proceeded. One nation or king covets another's territory or property; and, as conquest is supposed to give right to all the possessions gained by it, they kill, slay, burn, and destroy, till one is overcome or exhausted, and then the other makes his own terms; or, several neighboring potentates fall upon one that is weak; and, after murdering one half of the people, partition among themselves the fallen king's territory; just as the Austrians, Prussians, and Russians have done with the kingdom of Poland! - a stain upon their justice and policy which no lapse of time can ever wash out.
These wars and fightings could not be attributed to the Christians in that time; for, howsoever fallen or degenerate, they had no power to raise contentions; and no political consequence to enable them to resist their enemies by the edge of the sword, or resistance of any kind.