Battlefield Redemption: Why?

We didn't get to our warm up question this week, so will carry it over to next week's class. The question is related to The Problem of Evil, and it's this: Why did God choose to work out His redemptive plan in a war environment? In other words, why didn't God bind Satan at the outset of the Great Commission so that we could evangelize without resistance from the Satanic hosts? Please share your thoughts with our blog!