Catena Aurea on John 9:1–7: John Chrysostom

While it is day, He adds; i. e. while men have the opportunity of believing in Me; while this life lasts; The night cometh, when none can work. Night here means that spoken of in Matthew, Cast him into outer darkness. (Mat. 22:13) Then will there be night, wherein none can work, but only receive for that which he has worked. While thou livest, do that which thou wilt do: for beyond it is neither faith, nor labour, nor repentance.