Isaías 35
Bede
Isaías 35:1
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
Isaías 35:2
Because a multitude of Gentiles followed it after Judah came to faith in the Lord's incarnation and an astonished partaker of the same grace hastened its own unexpected conversion, Judah exclaimed in surprise, "Who is this that ascends from the desert, flowing with delights, leaning upon my beloved?" The church of the Gentiles ascends from the desert because the one who was deserted by its Creator for a very long time now arrives at his grace by the incremental steps of faith and good works, thus fulfilling what the prophet Isaiah said: "The desert and the dry land will rejoice, and the wilderness will exult and bloom like the lily." Indeed, she is truly flowing with those delights about which the spouse spoke above: "How beautiful you are, and how lovely, my dear, with delights," that is, with the delights of heavenly life. "Leaning upon my beloved" means leaning upon him without whose assistance she would be able neither to ascend above nor to rise again, for we are unable to possess either advancement in the virtues or the beginning of faith itself unless the Lord bestows them upon us.Therefore, Judah was even more awestruck by this grace of the Gentiles' new conversion, a grace that it believed pertained only to itself and to those who were received in its rite through the mystery of circumcision, as the Acts of the Apostles made abundantly clear. — Commentary on the Song of Songs 5:8.4-5