Mark 13:32 - 37

13:32 But of that day and that hour knoweth no man, no, not the angels which are in heaven, neither the Son, but the Father.
13:33 Take ye heed, watch and pray: for ye know not when the time is.
13:34 For the Son of man is as a man taking a far journey, who left his house, and gave authority to his servants, and to every man his work, and commanded the porter to watch.
13:35 Watch ye therefore: for ye know not when the master of the house cometh, at even, or at midnight, or at the cockcrowing, or in the morning:
13:36 Lest coming suddenly he find you sleeping.
13:37 And what I say unto you I say unto all, Watch.