In today's Gospel reading from Luke 12, Jesus said to his disciples: "Be sure of this: if the master of the house had known the hour when the thief was coming, he would not have let his house be broken into. You also must be prepared, for at an hour you do not expect, the Son of Man will come." Even if we know when the Lord will come, we still should be prepared. To be prepared is to be holy. Consider it to be your duty. Just know that he will come. When he will come is not the real issue here.