Alma 2:20
When Alma and his armies had driven the Amlicites out of the land and could no longer pursue them they did not cease their vigilance. Alma sent spies to keep him aware of what the Amlicites chose to do next. When we have driven the advancing forces of Satan out of our personal lives and our area of authority, meaning we allow for the proper agency of others, we must continue to watch carefully so that we may be prepared for the next tactic that the devil will use in trying to undermine our free society through the misuse of agency.