Luke 12:37 in the King James Version
Blessed are those servants, whom the lord when he cometh shall find watching: verily I say unto you, that he shall gird himself, and make them to sit down to meat, and will come forth and serve them.
Context
36 Be like men watching for their lord when he returns from the wedding feast, that when he comes and knocks, they may immediately open to him.
37 Blessed are those servants whom the lord will find watching when he comes. Most certainly I tell you that he will dress himself, make them recline, and will come and serve them.
38 They will be blessed if he comes in the second or third watch and finds them so.