It’s called practical or pragmatic Christianity. You might be trying to frame everything - in the NT - into a framework of peace. Like the Quakers and Mennonites do. I can respect it. But we live in a fallen world. And we sometimes have to make choices - that aren’t very pleasant. Like not being peaceful, if push comes to shove. If you want to ALWAYS be peaceful…because that’s how you view Christ and the NT - so be it. I can still be a Christian, in the FULL sense. But NOT always be peaceful - if push comes to shove.
Now suppose I have a black belt in Jiu-Jitsu, I’m an expert marksman, have a concealed weapons permit and I’m a Christian…I honor all scripture as true…as well as the historical creeds. And I try to be peaceful. From my perspective, I can use the Jiu-Jitsu - and the firearm…should the need arise…and still be a Christian.