Luke 12:35-40 (NIV)

35 ‘Be dressed ready for service and keep your lamps burning,

36 like servants waiting for their master to return from a wedding banquet, so that when he comes and knocks they can immediately open the door for him.

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 make them recline at the table and will come and wait on them.

38 It will be good for those servants whose master finds them ready, even if he comes in the middle of the night or towards 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.

40 You also must be ready, because the Son of Man will come at an hour when you do not expect him.’