First, I agree that inconsistency of church standards might be a sign of spiritual lukewarmness or even rebellion - and I appreciate Josh's admonition to discern the spirit of a group. However, look not just to church standards, but to the fruit of the Spirit at work in the group and their verbal and practical commitment to following the way of Jesus for signs of spiritual vitality.
But there may be another dynamic at stake as well...let me see if I can explain it.
Often when an NMB family comes into a plain community, they come because they are attracted by what they see as a radical expression of faith and a rejection of worldliness. Thus, they arrive with a zeal for plainness - wrestling with the significance of each act of non-conformity (dress, covering, relationship to entertainment, relationship to instruments, etc.). Their move toward plainness is front and center in their lives, and each life choice is significant because it represents a major change for them. In fact, they often face opposition from family and friends, who feel judged or rejected as a result of these choices. The NMB family takes comfort that they are not walking this difficult path of non-conformity alone, but that they are doing so as a part of like-minded brethren. That's one reason why they are disheartened when they see that the standards are being adhered to loosely.
- Like a conscientious teen learning to drive for the first time, they are fixed on every road rule and every speed limit sign - thinking through every driving action (and analyzing the actions of others) in order to earn their rightful place as a safe and courteous driver. They are focused primarily on driving.
- Like a driver who has safely driven cars for many years, the rules of the road and the mechanics of driving become intuitive - second nature. They are generally aware of the speed limit, but also of the flow of traffic and what feels like a safe speed and conduct on a given road in given conditions. They are not a rebellious or aggressive driver (those are easy to pick out), but by now they have grown beyond the need to be fixated on the minutia of driving. They are focused on the journey.
Can experienced drivers become too complacent? Sure.
Can they develop bad or lazy habits? Definitely!
In fact it is a good idea for them to be reminded regularly of what the rules are, an even attend a drivers safety course now and then to remain sharp....and they can learn a few things about being conscientious from that teen driver as well.
Oh...and eventually the teen driver becomes more experienced and more intuitive in their driving, and they will get to a point where their focus is more on the journey than the act of driving.
An NMB whose journey toward non-conformed Anabaptism started about 30 years ago.