Funny to me that this quote elicits this response. I read this as a preacher saddened by the cheering of victory in war (just or unjust) instead of weeping for those lost due to the influence of sin in our world.

The point is in our daily lives. Are we thinking like the world (vengeance, I'm right, etc) or are we viewing as Jesus would? Do we pray for and love our enemies or do we relish destroying them?

This is one reason so many non-believers struggle to view Christians as being true followers of Jesus teachings.