Mathew 24:42-45 (NKJV) 

42- Watch therefore, for you do not know what hour your Lord is coming. 

43- 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. 

44- Therefore you also be ready, for the Son of Man is coming at an hour you do not expect.

45- “Who then is a faithful and wise servant, whom his master made ruler over his household, to give them food in due season?