"Now when the owner of the vineyard comes, what will he do those tenants?"
In this week's Gospel, Jesus speaks of the benevolent landlord who tried time and again to collect his rightful produce from the tenants. These tenants, instead of giving it to the landlord, killed the servants first and then his son.
In ancient times, the law will support the landlords in situations such as these. The tenants will either be executed or enslaved. In the end, the landlord went personally to collect the produce and Jesus asked the Jewish leaders for their opinions on what would happen.
The landlord is God and the servants are the prophets. The son is the Son of God and the evil tenants, the Jewish leaders. By announcing the sentence of the evil tenants, the Jewish leaders are in fact announcing their own sentence - that God's kingdom will be given to those who deserve them.
People who delay in discerning their religious vocations are to be wary. The promptings of God will either intensify or diminish overtime. Not everyone will have a longing for a religious vocation from God and so it is truly blessed if you have one. Begin the discernment process with a spiritual director assigned by the local Church for religious vocations. You never know if you are truly called until you start somewhere.