The blood of Jesus the Lamb of God is so powerful to plead with God for His interventions to end the worse evils. Any attack is addressed by invoking (calling on, crying out even quietly) the Name 'Lord Jesus'. His name is mightier than any evil. Some evils might need prayer and fasting too He said. Doing this instead of resorting to anything violent or aggressive can keep a gospel worker functioning effectively at peace without blood guilt. King David was not allowed to build the Temple because he had been a champion and then king who had shed blood of God's enemies. We need to be kept from this is we are to help build the Temple with Christ.
