Bede : After John was killed, the Lord saw the time drawing near and withdrew to a deserted place called Bethsaida. This teaches mystically that a deserted Judah, which had beheaded its prophets by not believing them, would later become fruitful in the desert of a church that possessed no man of the Word. Hence, the beautiful Bethsaida means "house of fruitfulness." For it was about it that Isaiah said, "The desert and the dry land will rejoice, and the wilderness will exult and bloom like the lily," and again, "they will see the glory of the Lord and the beauty of our God." — On the Gospel of Luke 3:9.10 Eusebius of Caesarea : This, too, was fulfilled, was clearly fulfilled, by our Savior's miraculous works after John's preaching. Notice therefore how he bears good tidings to the desert, not generally or to any desert but to one particular desert by the bank of the Jordan. This was because John lived there and baptized there, as Scripture says, "John was in the desert baptizing." … I think the desert here is a symbol of that which of old was void of all God's good things, I mean the church of the Gentiles. And the river by the desert that cleanses all that are bathed therein is a figure of some cleansing spiritual power, of which the Scriptures speak, saying, "The movements of the river make glad the city of God." And this means the ever-flowing stream of the Holy Spirit welling from above and watering the city of God, which is the name for life according to God. This river of God, then, has reached even to the desert, that is the Gentile church, and even now supplies it with the living water that it bears. — PROOF OF THE GOSPEL 9:6 Eusebius of Caesarea : Here also the coming of God for salvation, bringing many blessings, is precisely foretold. The prophet says that there will be a cure for the deaf, sight for the blind, yes, even healing for the lame and tongue-tied, and this was fulfilled only at the coming of our Savior Jesus Christ, by whom the eyes of the blind were opened, and the deaf regained their hearing. Why need I say, how many palsied and deaf and lame also received physical cure by the hands of his disciples? And how many others, afflicted with various diseases and maladies, received of him healing and salvation, according to the inspired prediction of prophecy and according to the unimpeachable testimony of the holy Gospels? And the prophecy here disguises under the name of "desert" the church of the Gentiles, which for long years deserted of God is being evangelized by those of whom we are speaking, and it says that besides other blessings the glory of Lebanon will be given to the desert. Now it is customary to call Jerusalem Lebanon allegorically, as I will show, when I have time, by proofs from holy Scripture. This prophecy before us, therefore, teaches that by God's presence with men the glory of Lebanon will be given to that which is called "desert," that is to say, the church of the Gentiles. — PROOF OF THE GOSPEL 6:21 Eusebius of Caesarea : Moreover, it is said in this prophecy that the glory of Lebanon and the honor of Carmel shall be given to this wilderness. What is the glory of Lebanon but the worship performed through the sacrifices of the Mosaic law, which God refused in the prophecy which says, "Why do you bring me Lebanon from Sheba? And of what service to me is the multitude of your sacrifices?" He has transferred the glory of Jerusalem to the desert of Jordan, since, from the times of John, the ritual of holiness began to be performed not at Jerusalem but in the desert. In like manner, too, the honor of the law and of its more external ordinances was transferred to the wilderness of Jordan for the same reason, namely, that they who need the healing of their souls no longer hastened to Jerusalem but to that which was called the wilderness, because there the forgiveness of sins was preached. — PROOF OF THE GOSPEL 9:6 Gregory of Nyssa : And where shall we place that oracle of Isaiah, which cries to the wilderness, "Be glad, O thirsty wilderness: let the desert rejoice and blossom as a lily: and the desolate places of Jordan shall blossom and shall rejoice"? For it is clear that it is not to places without soul or sense that he proclaims the good tidings of joy: but he speaks, by the figure of the desert, of the soul that is parched and unadorned, even as David also, when he says, "My soul is unto Thee as a thirsty land," and, "My soul is athirst for the mighty, for the living God." — ON THE BAPTISM OF CHRIST Gregory of Nyssa : And "the excellency of Carmel" is given to the soul that bears the likeness to the desert, that is, the grace bestowed through the Spirit. For since Elijah dwelt in Carmel, and the mountain became famous and renowned by the virtue of him who dwelt there, and since moreover John the Baptist, illustrious in the spirit of Elijah, sanctified the Jordan, therefore the prophet foretold that "the excellency of Carmel" should be given to the river. — ON THE BAPTISM OF CHRIST Gregory of Nyssa : And "the glory of Lebanon," from the similitude of its lofty trees, he transfers to the river. For as great Lebanon presents a sufficient cause of wonder in the very trees which it brings forth and nourishes, so is the Jordan glorified by regenerating men and planting them in the Paradise of God: and of them, as the words of the Psalmist say, ever blooming and bearing the foliage of virtues, "the leaf shall not wither," and God shall be glad, receiving their fruit in due season, rejoicing, like a good planter, in his own works. — ON THE BAPTISM OF CHRIST Jerome : (Chapter 35, verses 1, 2) The desolate and impassable will rejoice, and solitude will exult and flourish like a lily. It will sprout and blossom; with joy and praise it will exult. The glory of Lebanon has been given to it, the splendor of Carmel and Sharon. They will see the glory of the Lord and the splendor of our God. LXX: Rejoice, O desert, thirsting, and let the solitude exult and flourish like a lily. The deserts of the Jordan will blossom and exult; the glory of Lebanon has been given to it, and the honor of Carmel. And my people will see the glory of the Lord and the majesty of our God. Since Jerusalem has been turned into pitch and its smoke rises forever, and it is inhabited by the pelican and the hedgehog, the ibis and the raven, the dragons and the ostriches, demons and half-man half-horse creatures, lamia and hairy beings: and the Lord's fulfilled sentence is upon it: 'Your house will be left to you desolate' (Luke 13:35): therefore, what was once deserted, of which it is said in the Psalm: 'The voice of the Lord shaking the wilderness', and the Lord will shake the wilderness of Kadesh. The voice of the Lord prepares the stags; and it reveals the thickets of the forests (Psalms 28:8,9), it will be transformed into the abundance of all things, and the beasts of the nations will be driven out from the fighting stags, from all the forests, which previously possessed them, so that what is said in the same Prophet may be fulfilled: Rejoice, O barren one, you who do not bear; burst forth and cry out, you who are not in labor; for the children of the desolate one will be more than the children of her who has a husband (Isaiah 54:1). This was previously thirsty, or impassable, not having life-giving waters, and the Lord did not walk (or enter) through it, which now will blossom into a lily, or as the Eagle expressed more significantly, an opening, which we can call a swelling rose with not yet expanded leaves. However, it will blossom, as the Apostle declares: We are the good odor of Christ in every place (II Cor. II, 15). And that from the Song of Songs: Flowers have been seen in the land; mandrakes have given forth their fragrance (Cant. VII, 12, 13). And what is placed in the LXX, 'and the deserts of the Jordan shall rejoice,' is not found in Hebrew, but we can say: in the Jordan river, the baptism of repentance was shown, which the Lord signed and confirmed with his washing. And because it is figuratively said about the wilderness, which refers to the nations, in which John was, it can be subsequently joined to the Jordan, so that through the desert of the nations we come to the baptism of the Savior. And what follows, the glory of Lebanon was given to him, and the beauty of Carmel and Sharon, according to the previous explanation we must understand, in which we said that Lebanon or the Temple of Jerusalem is meant, as Zachariah says: Open, Lebanon, your gates (Zach. XI, 1); and Ezekiel: A great eagle with great wings and full of feathers, which has a direction to enter Lebanon and Carmel (Ezek. XVII. 3): the former meaning the people, of whom it has been said above: And it will be a desert in Carmel, and Carmel will be counted as a wilderness (Isa. XXIII, 9); and Sharon has the same meaning, Scripture saying: Sharon has become like a desert. Therefore, all brightness, worship of God, and knowledge of circumcision, and the most fertile and open places, which are called Sharon, for which Symmachus interpreted as fields, will be given to the once deserted Church, and its inhabitants will see the glory of the Lord, and the beauty or greatness of our God. — Commentary on Isaiah