Luke 18-20

Luke 20:9 is where the parable of the vineyard begins. The vineyard owner sold the harvest to the tenants in exchange for their labor. But we learn what the tenants really wanted was the vineyard. They desired an inheritance. That quest for the inheritance drove them to extreme expressIons of selfishness. They claimed as their own that which was not (vss 10, 11). They even lorded their position of tenants as superior to the servants who came to collect the owners due (vs 12). Finally their ultimate intentions became clear when they recognized the son (vs 14).  Their actions betrayed their selfish motives. 
The lesson we need to learn is both the owner's reaction to such idolatry, and the warning signs that we are being tempted to perform such atrocities.
Stuart