Luke 12:37-39 NIV

37 It will be good for those servants whose master finds them watching when he comes. Truly I tell you, he will dress himself to serve, will have them recline at the table and will come and wait on them.

References for Luke 12:37

38 It will be good for those servants whose master finds them ready, even if he comes in the middle of the night or toward daybreak.
39 But understand this: If the owner of the house had known at what hour the thief was coming, he would not have let his house be broken into.

References for Luke 12:39