Every good soldier wants to make sure that conflict is out on a battlefield, not in close to home and certainly not in the ranks. It is a whole other level of danger to be outmaneuvered by the enemy so that the home turf or the ranks of fellow soldiers are compromised from within. In the next two verses, Jude puts out a call very much related to that concern, and we carefully look at them under these two points: the necessary exhortation and the creeping infiltration.