Jesus' parable of the landowner and the day-laborers illustrates that grace is the currency of heaven and the economy of the kingdom. Those who were chosen and called from the marketplace at the very end of the day received the same wages as the ones who had been working since the early morning.

This helps us understand that the groups of Gentiles who were brought in to the kingdom later may receive the same reward as the Jews who were brought in at the beginning. Likewise, the man called at the end of his life receives a reward just as him who was called at the beginning, all because God is generous. And even though some of us may only serve Him for 60 years, we may have the reward of the patriarch who served Him for 600.