We must pray because prayer is essential in spiritual battle.  We can see how essential it is by observing three elements of battlefield prayer.

1. The Occasion of Battlefield Prayer. (v. 18a.)
2. The Persistence of Battlefield Prayer. (v.18b)
3. The Requests of Battlefield Prayer. (v.18-20)

https://trinitybaptistfindlay.com/

https://benjennings.org