Jesus told the chief priests and leaders to listen to this story: A land owner once planted a vineyard. He built a wall around it and dug a pit to crush the grapes in. He also built a lookout tower. Then he rented out his vineyard and left the country.
It is like what happens when a man goes away for a while and places his servants in charge of everything. He tells each of them what to do, and he orders the guard to keep alert.