A possible start to an introduction:
A quote whose origin may be as far back as the 1700s: All that is necessary for the triumph of evil is that good men do nothing.
A fact not just for 18th century wars and revolutions. That’s a fact that’s almost as old as the human race. Trouble began for Adam not when he ate the fruit, but when he failed to engage in holy warfare and expel the crafty serpent from Eden. All that the serpent needed to triumph was for Adam to do nothing. And as it was for Adam, so it was exactly the same for the people of Israel in the days of the conquest. Israel’s troubles began when they failed to engage in holy warfare and expel the evil enemy, the Canaanites. All that was necessary for the triumph of evil was that good men did nothing.
22 The house of Joseph also went up against Bethel, and the LORD was with them.