This arrangement appeared unjust to the bystanders. They probably thought the unfaithful servant"s mina should have gone to a servant with a smaller reward. They were looking at what was best for the servants. However the master was operating on the principle that faithfulness with little indicates faithfulness in much. Therefore it was to His advantage to give the unfaithful servant"s mina to the most faithful servant because he would make the best use of it. The master expressed this truth proverbially ( Luke 19:26; Luke 13:12). He was looking at what was best for himself. Obviously what is best for God is more important than what is best for His servants. Still the master"s action was also fair to his servants since the servant who glorified the master most received the greatest reward. [source][source][source]
Zaccheus, who was listening to this parable, had just promised to give half of his possessions to the poor and to reimburse anyone he had defrauded four-fold ( Luke 19:8). Jesus" teaching here would have encouraged him to follow through on his commitment. He would have a great reward, much treasure in heaven, if he so served the Master faithfully. [source][source][source]