Bede the Venerable
Catena Aurea · Lukasevangelium 21
And in the day time he was teaching in the temple; and at night he went out, and abode in the mount that is called the mount of Olives. And all the people came early in the morning to him in the temple, for to hear him.
What our Lord commanded in word, He confirms by His example. For He who bid us watch and pray before the coming of the Judge, and the uncertain end of each of us, as the time of His Passion drew near, is Himself instant in teaching, watching, and prayer. As it is said, And in the day time he was teaching in the temple, whereby He conveys by His own example, that it is a thing worthy of God, to watch, or by word and deed to point out the way of truth to our neighbour.