Mark 13, 33-37
‘Be on your guard, stay awake, because you never know when the time will come. It is like a man travelling abroad: he has gone from his home, and left his servants in charge, each with his own work to do; and he has told the doorkeeper to stay awake. So stay awake, because you do not know when the master of the house is coming, evening, midnight, cockcrow or dawn; if he comes unexpectedly, he must not find you asleep. And what I am saying to you I say to all: Stay awake!’
Our Lady of the Miraculous Medal