Unfairness of Grace

There is a famous parable Jesus tells in Matthew 20:1-16 about the owner of a vineyard, who hires workers early in the morning, again at nine, again at noon, again at three, and again at five. When the work day comes to an end, the owner pays them all the same: one denarius. The workers who worked a full day complain about the unfairness of the situation, but the owner of the vineyard answers them…