It was customary, the Bible tells us in 2 Samuel 11:1, when the spring time came, for the kings to go to war. Kind of an odd little ritual, it would seem. Their armies would stand on opposite sides of a field and then a trumpet would blast and they would begin to fight.

There is a time and place for spiritual warfare, a time when the people of God say to our enemy, "Enough! You've ravaged our families and our nation long enough and we will contest you from here forward every inch of the way!" And a trumpet blast - a signal to fight - must be issued.

New Orleans is a symbol of what is at stake in America today. After Katrina hit, Jesus-followers were thrilled as gangs, pushers, and pimps were rousted out of the city and the citizens cried out to God for help.

But lately, evil is seeping back into New Orleans. There is an upsurge of violence on the streets.