In this day, we find that the opposition to believers is great. They began and continue to pursue the defeat of the church. The church is the collective body of believers, saved by His grace. It is not those who attend church, but don't believe. There has been a battle plan used over the years called, divide and conquer. If the enemy can split the church, they can isolate and attack. They do this with constant barrage of anti-truth, anti-God messages. Hitler's minister of propaganda said, if you tell a lie loud enough and long enough, people will believe it. This is happening today against the body of believers, redeemed by His blood. As believers we need to take up the battle to promote the Gospel of Jesus Christ to the world around us. We can see in this passage that Paul encouraged and admonished the saints to do just that.