Mark 13:33-37

³³Take ye heed, watch and pray: for ye know not when the time is. ³⁴It is as when a man, sojourning in another country, having left his house, and given authority to his servants, and to each one his work, commanded also the porter to watch. ³⁵Watch therefore: for ye know not when the lord of the house cometh, at even, or at midnight, or at cockcrowing, or in the morning; ³⁶lest coming suddenly he find you sleeping. ³⁷And what I say unto you I say unto all, Watch.