Mark 13:33-37 (King James Version)
33 Take ye heed, watch and pray: for ye know not when the time is.
34 For the Son of man is as a man taking a
far journey, who left his house, and gave authority to his servants,
Watch ye therefore: for ye know not when
the master of the house cometh, at even, or at midnight,
36 Lest coming suddenly he find you sleeping.
37 And what I say unto you I say unto all, Watch.