If Jesus is the Master, it seems they would all represent believers. Unbelievers would not be serving Jesus. Only the fourth servant does not know the Master's will. Perhaps a believer that has not studied the Bible. What do you think?
Luke 12:40 - 48
ESV - 40 You also must be ready, for the Son of Man is coming at an hour you do not expect. 41 Peter said, "Lord, are you telling this parable for us or for all?
For follow-up discussion and general commentary on the topic. Comments are sorted chronologically.