בקנאו את קנאתי בתוכם
The zealot acts on behalf of Hashem. After being completely certain that he has expunged every vestige of personal interest and emotion, to the point that he truly feels that he is acting only for Hashem, then he can move forward by acting zealously. The commentators question the meaning of b’socham, among them, and its placement at the end of the pasuk. It is almost as if the Torah is conveying to us the criterion for kanaus, zealousness: it must be b’socham, among them. Simply, this implies that the kanai should view himself as being “among them,” a member of…