If you hate rejection, imagine how Jesus feels about it?
Jesus uses these parables in facing down the religious leaders and Israel proper for the rejection of him as the fulfillment of God’s promise to offer mankind a way to a restored relationship with their Creator. Some believed they were good enough by their nationality; others bought the lie it was their innate goodness. Jesus warned both it was only through belief and actions that proved the belief was genuine that they would enter God’s kingdom. Instead, the kingdom would go to those who knew they didn’t deserve it.