Catholic Commentary
Transformation of the Desert into Abundance
7The burning sand will become a pool, and the thirsty ground springs of water. Grass with reeds and rushes will be in the habitation of jackals, where they lay.
Isaiah 35:7 describes God's miraculous reversal of the desert wilderness, where the shimmering mirage (sharab) that deceives the thirsty traveler becomes an actual pool of water. This transformation symbolizes God's redemptive power to convert spiritual deception and death into genuine life and grace for the exiled people.
The mirage becomes the well—what deceives and kills is inverted by God's power into what sustains and saves.
The verse also carries an ecclesiological meaning. The Church herself is the place where the desert becomes a pool — the community gathered around Word and Sacrament where humanity's deepest spiritual wasteland is transformed. This reading was developed by Origen, who understood the refreshment of Isaiah 35 as signifying the corporate refreshment of the Body of Christ in the Eucharist and in the community of believers who share the life of the Spirit.
Catholic tradition uniquely illuminates this verse through the lens of sacramental theology. The Catechism of the Catholic Church teaches that Baptism "is the sacrament of regeneration through water in the word" (CCC 1213) and that water is its "primary symbol" because water "cleanses and gives life" (CCC 1218). The transformation Isaiah describes — from sharab (the deadly mirage) to agam (the life-giving pool) — maps precisely onto the baptismal logic: what was ordered toward death is reconstituted, by divine action, as the source of supernatural life.
Pope Benedict XVI, in his post-synodal exhortation Verbum Domini (2010), reflects on the prophetic word as itself a transformative force in history, not merely a prediction but a creative utterance that reshapes reality. Isaiah's declaration that the burning sand will become a pool participates in this dynamic: the prophetic word anticipates and begins to enact the transformation it describes.
The Fathers of the Church read the entire sequence of Isaiah 35 as a portrait of the Messianic age inaugurated by Christ. St. Irenaeus (Adversus Haereses IV) cites the healing signs of Isaiah 35:5–6 as Christ's own self-identification (cf. Mt 11:4–5), anchoring the physical miracles within the broader cosmic renewal Isaiah envisions. The burning sand's becoming a pool belongs to this same Christological horizon: the mission of Christ is to convert every region of human desolation — moral, spiritual, physical — into a place of divine abundance. This transformation is not yet complete; it awaits its full realization at the Parousia, making Isaiah 35:7 simultaneously a realized and an eschatological promise.
For a contemporary Catholic, this verse is a direct challenge to the spirituality of despair. Modern culture proliferates its own version of sharab — the shimmering mirages of consumerism, digital distraction, and ideology that promise satisfaction and deliver desolation. Many Catholics know this experience from the inside: the parched feeling that follows when what was supposed to satisfy has not.
Isaiah 35:7 invites the reader to identify their personal sharab — whatever desert of habitual sin, grief, spiritual dryness, or disillusionment they inhabit — and to bring it specifically before God in prayer, trusting that divine power is not merely adequate to the situation but capable of inverting it entirely. This is not optimism; it is eschatological faith.
Practically: in the Examination of Conscience, one might ask not only "what sins have I committed?" but "what mirages am I chasing?" In Lectio Divina with this verse, sitting with the word sharab — the deceptive promise — can be a powerful gateway to honesty about spiritual substitutes for God. The verse also strengthens the Easter Vigil's baptismal renewal: we were once desert; the waters of the font made us a pool.
Commentary
Literal and Narrative Sense
Isaiah 35 is one of the most luminous chapters in the entire prophetic corpus, often called the "Isaiah Apocalypse of Joy." It stands in sharp literary contrast to chapter 34, which describes the desolation and judgment of Edom and the nations hostile to God's people. Chapter 35 pivots dramatically: where chapter 34 ends with wasteland, silence, and death, chapter 35 erupts with flowering, song, and life. Verse 7 sits near the center of this reversal, completing a sequence of images (blooming desert, v.1–2; strengthened limbs, v.3–4; opened eyes and ears, v.5–6; waters in the wilderness, v.6b) that build toward a vision of total transformation.
The Hebrew word translated "burning sand" is sharab (שָׁרָב), which refers specifically to the shimmering mirage produced by desert heat — the optical illusion of water that torments the thirsty traveler. It is not merely dry land; it is a deceptive land, promising moisture and delivering death. That this precise thing — the deceiving mirage — becomes a genuine pool (agam, a standing reservoir or marsh) is the point of maximum irony and grace. The lie becomes truth. The death-dealing becomes life-giving. This is not incremental improvement; it is ontological reversal.
The broader context within the book of Isaiah is significant. Chapter 35 anticipates the "new exodus" theology that runs through Second Isaiah (chapters 40–55), where the return of the exiles from Babylon is imagined as a new journey through the wilderness, accompanied by miraculous provision of water (cf. Is 41:18; 43:19–20; 48:21). For the original audience of the 8th–6th centuries BC, this verse would have spoken concretely of hope: the barren land of a conquered and exiled people would not remain desolate. God, who once brought water from the rock for Moses, would again provide.
Typological and Spiritual Senses
The Church Fathers read Isaiah 35 consistently as a messianic and baptismal text. The transformation of sharab into agam moves, in the typological register, from the aridity of sin and spiritual death to the abundance of grace. The desert is the human soul apart from God — not merely neutral emptiness but actively deceptive, generating illusions of fulfillment that only deepen thirst. The pool is the grace of the Holy Spirit, especially as communicated through Baptism and the Eucharist.
St. Jerome, commenting on this passage in his Tractatus in Psalmos, draws the parallel to the soul's journey from the vanities (, the mirages) of worldly desire to the true refreshment () found only in Christ. St. Cyril of Alexandria sees in the water imagery of Isaiah 35 a direct type of the Holy Spirit poured out at Pentecost and in the sacrament of Baptism — the Spirit who, as Jesus promised at the Feast of Tabernacles, would become "rivers of living water" flowing from those who believe (Jn 7:38–39).