As an example of Theocratic or spiritual warfare I remember them using the example of when Abraham, in order to spare his own life, told King Abimelech that his wife Sarah was his sister. King Abimelech took Sarah for himself but spared Abraham because he was her brother.
Sarah was Abrahams half sister as well as his wife....so it wasn't a total lie but it was a withholding of information so as to lead Abimelech to the conclusion they wanted him to.
A modern day example would be when Witnesses work in apartment buildings or neighborhoods where they aren't allowed in. They go in under some false premise, once in, they go from door to door for as long as they think it's safe to do so without getting tossed out.