Luke 12:43
Blessed is that servant, whom his lord when he cometh shall find so doing.
Cross-reference
Luke 12:37
Parallel
Luke 12:37 expands the blessing: the master will serve those found awake and faithful — the same reward promised in verse 43.
Matthew 24:46
Parallel
Matthew 24:46 is the exact parallel passage — identical wording about the blessed servant found doing his duty when the master returns.
2 Peter 3:14
Parallel
2 Peter 3:14 urges being found without spot at Christ's coming — an eschatological parallel to being found faithfully serving when the master returns.
Proverbs 27:18
Parallel
Proverbs 27:18 promises honor to the servant who guards his master — similar reward for faithful service as in the parable's blessing.