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. And if he shall come in the second watch, or come in the third watch, and find them so, blessed are those servants. And this know, that if the goodman of the house had known what hour the thief would come, he would have watched, and not have suffered his house to be broken through. Be ye therefore ready also: for the Son of man cometh at an hour when ye think not. – Luke 12:37-40, KJV

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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. 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. 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. – Luke 12:37-40, NIV