Mark 13:35-37

Therefore watch (give strict attention, be cautious and alert), for you do not know when the Master of the house is coming–in the evening, or at midnight, or at cockcrowing, or in the morning– [Watch, I say] lest He come suddenly and unexpectedly and find you asleep. And what I say to you I say to everybody: Watch (give strict attention, be cautious, active, and alert)!