Being a disciple of Jesus means more than just believing in a set of doctrines or trying to imitate the example of Christ. Rather, as Paul says in his portion of his letter to the Galatians, to be a Christian is to live at one with Christ— indeed, to have the very Spirit of Christ abiding within. It is to die to the law, die to self and live a new life with Jesus at the centre.
Roughly two decades after his initial conversion experience, Paul travels to Jerusalem to meet with what he describes as “pillars” of the church— Peter, James and John, all Jewish Christians who were with Jesus from the very beginning. Here, Paul and the Jerusalem apostles discuss many important things. In the end, these pillars of the church give Paul the right hand of fellowship. This means that they recognized the validity of his calling as an apostle and affirmed that gospel message that he preached. The gospel message is this: that one is saved by the faith of Christ and NOT by obedience to Torah.
In the Parable of the Wicked Tenants, Jesus likens Israel to a vineyard- a vineyard that is naturally expected to bear fruit. However, the "fruit" that this "vineyard" is supposed to bear isn't grapes. Rather, Israel has been called to bear the fruit of righteousness and peace.
But what if Israel's leadership- the Pharisees and the chief-priests- refuse to hand over this fruit? What will God, the owner of this "vineyard," do to them?
We feel we’re being treated fairly when we get what we deserve. But what happens when we DON’T get what we deserve? What if there is no obvious payoff for all of our hard work? What if, despite all our laziness and failure, we’re still (to our astonishment) rewarded magnificently? None of this satisfies our innate sense of fairness. But, as we learn from Jesus’ Parable of the Labourers in the Vineyard, such is the nature of God’s divine love. It is, to our sensibilities, rather unfair. But that is the beauty of it.