Luke 12:36-40

36like 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. 37It 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. 38It will be good for those servants whose master finds them ready, even if he comes in the middle of the night or toward daybreak. 39But 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. 40You also must be ready, because the Son of Man will come at an hour when you do not expect him.”