Catena Aurea on John 9:1–7: Augustine of Hippo

But if we work now, now is the day time, now is Christ present; as He says, As long as I am in the world, I am the light of the world. This then is the day. The natural day is completed by the circuit of the sun, and contains only a few hours: the day of Christ’s presence will last to the end of the world: for He Himself has said, Lo, I am with you alway, even unto the end of the world. (Mat. 28:20)