" Some people think that because Jesus accomplished everything on the cross, we don’t have to do anything at all. But if that’s true, why did Jesus teach us to pray, “Deliver us from the evil one” (Matthew 6:13)? Why did Paul say to “pray without ceasing” (1 Thessalonians 5:17)? Yes, the victory over evil was accomplished on the cross, but the enemy is still here. He is a defeated enemy, but he is still waging the war. "

― Stormie Omartian , The 7-Day Prayer Warrior Experience (Free One-Week Devotional)