Luke 12:35-40 (NKJV)
35 “Let your waist be girded and your lamps burning;
36 and you yourselves be like men who wait for their master, when he will return from the wedding, that when he comes and knocks they may open to him immediately.
37 Blessed are those servants whom the master, when he comes, will find watching. Assuredly, I say to you that he will gird himself and have them sit down to eat, and will come and serve them.
38 And if he should come in the second watch, or come in the third watch, and find them so, blessed are those servants.
39 But know this, that if the master of the house had known what hour the thief would come, he would have watched and not allowed his house to be broken into.
40 Therefore you also be ready, for the Son of Man is coming at an hour you do not expect.”