1 It is nothing new to your ears, beloved, that the Evangelist John, like an eagle, takes a loftier flight, and soars above the dark mist of earth, to gaze with steadier eyes upon the light of truth. From his Gospel much has already been treated of and discussed through our ministry, with the Lord's help; and the passage which has been read today follows in due order. What I am about to say, with the Lord's permission, many of you will hear in such wise that you will be reviewing what you know, rather than learning what you know not. Yet, for all that, your attention ought not to be slack, because it is not an acquiring, but a reviewing, of knowledge. This has been read, and we have in our hands to discourse upon this passage— that which the Lord Jesus spoke with the Samaritan woman at Jacob's well. The things spoken there are great mysteries, and the similitudes of great things; feeding the hungry, and refreshing the weary soul.
Source: Tractates on the Gospel of John (New Advent)