João 7
Ambrose of Milan · Comentário Patrístico (catena)
João 7:16
Doctrine that is of God, then, is one thing; doctrine that is human is another. So when the Jews, regarding him as man, called into question his teaching and said, "How does this man have such learning when he has never been taught?" Jesus answered and said, "My teaching is not mine." For in teaching without elegance of letters, he seems to teach not as [a] man but rather as God who, instead of learning his doctrine, originated it. For he has found and devised the entire way of discipline, as we have read above, inasmuch as of the Son of God it has been said, "This is our God; no other can be compared with him. He has uncovered the whole way of knowledge and shown it to his servant Jacob and to Israel, whom he loved. Only then did [Wisdom] appear on earth and live among human beings." How, then, could he, as divine, not have his own doctrine—he who has found the entire way of discipline before he was even seen on earth? — Exposition of the Christian Faith 2.9.79-80
João 7:38
This … is not a trivial matter when we read that a river goes forth from the throne of God. For you read the words of the Evangelist John that speaks to this: "And he showed me a river of living water, bright as crystal, proceeding out of the throne of God and of the Lamb. In the middle of the street and on either side was the tree of life, bearing twelve kinds of fruits, yielding its fruit every month, and the leaves of the tree were for the healing of all nations." This is certainly the river proceeding from the throne of God, that is, the Holy Spirit, whom he drinks who believes in Christ, as Christ himself says: "If anyone thirst, let him come to me and drink. He who believes on me, as the Scripture says, out of his belly shall flow rivers of living water. But this he spoke of the Spirit." Therefore the river is the Spirit. This, then, is in the throne of God, for the water does not wash the throne of God.… And what wonder is it if the Holy Spirit is the throne of God, since the kingdom of God itself is the work of the Holy Spirit. — On the Holy Spirit 3.20.153-156
João 7:38
There was a fountain that irrigated the paradise. What fountain, if not the Lord Jesus Christ! He is the fountain of eternal life, just like the Father; for it is written: "For with you is the fountain of life" (Psalm 36:10). Moreover, "rivers of living water will flow from his belly" (John 7:38). And the fountain is read, and the river is read, which irrigates the fruitful tree of paradise, which bears fruit unto eternal life. Therefore, this fountain, as you have read, for the fountain says, proceeds from Eden, that is, in your soul there is a fountain.... This is the fountain that springs forth from a soul exercised as full of pleasure: this is the fountain that irrigates paradise, that is, the virtues of a soul flourishing with the highest merit.... For the fountain is according to the Gospel, saying: "If anyone thirsts, let him come to me and drink" (John 7:37); the fountain is also according to the prophet who says: "Come and eat from my bread and drink the wine which I have mixed for you" (Proverbs 9:5). Just as wisdom is the fountain of life, the source of spiritual grace, so it is the fountain of the other virtues that guide us toward eternal life. Therefore, this fountain does not proceed from a soul that is uncultivated, but from one that is cultivated, in order to irrigate the paradise, that is, the various orchards of virtues. Among these virtues, there are four beginnings into which this wisdom is divided. What are these four beginnings of virtues if not one of prudence, another of temperance, a third of fortitude, and a fourth of justice? Therefore, just as the source of wisdom, so also these four rivers flowing from that source are the streams of virtues. — On Paradise 3.13-14