Theophylact of Ohrid — as excerpted in the Catena Aurea on Luke 12:35-40

“Or since the watches are the hours of the night which lull men to sleep, you must understand that there are also in our life certain hours which make us happy if we are found awake. Does any one seize your goods? Are your children dead? Are you accused? But if at these times you have done nothing against the commandments of God, He will find you watching in the second and third watch, that is, at the evil time, which brings destructive sleep to idle souls.”