What sort of "heaven" has any sort of war?

War: what is it good for? Absolutely nothing!
Spiritual warfare is also spiritual wickedness.

Perhaps it's describing childish law heaven,
and earthly law -vs- law = loser -vs- loser,
still trying to get peace by win a sides war,
kinda like atheists vs theists on Y/A: R & S.
Both sides should read Romans 2, and
notice four consequences of contention:
1. indignation
2. wrath
3. tribulation
4. anguish