Jean Khoury

Summary: This article offers a unified reading of Romans 8:15‑27, drawing together two movements that Paul holds inseparably: the Spirit’s gift of filial adoption (“Abba, our Father”) and the Spirit’s groaning intercession, alongside the groaning of creation and of believers themselves. Read as a single arc, Romans 8 discloses a Trinitarian grammar of prayer: the Spirit of adoption moves believers to cry out to a Father who is truly theirs; that same Spirit groans within them, interceding according to the will of the Father who searches all hearts; and this groaning is not incidental to the spiritual life but its hidden engine. Read further in light of St. John of the Cross’s Living Flame of Love and St. Thérèse of Lisieux’s theology of charity, the Spirit’s groaning is revealed as the very fire that makes authentic sonship, prayer, mission, and martyrdom possible. Adoption gives believers the right to cry “Father”; the Spirit’s groaning and flares of love ensure that this cry, and everything that flows from it, is conformed to the Father’s will and burns with his own charity.

Introduction

Romans 8 moves in a single, sustained breath from adoption to groaning to glory. Paul does not treat these as separate topics but as one continuous account of what it means to live “in the Spirit.” Believers who have received “the Spirit of adoption” cry out, “Abba, Father” (v. 15). That same chapter culminates in the Spirit’s own groaning intercession, “too deep for words,” offered to the Father “who searches the hearts” (vv. 26‑27) — a groaning set within the still wider groaning of all creation and of believers themselves as they await the redemption of their bodies (vv. 22‑23).

It is a mistake to read the cry of adoption in verse 15 and the groaning of intercession in verses 26‑27 as two unrelated spiritual experiences — one a confident beginning, the other a mysterious later struggle. They are, in fact, two expressions of a single reality: the Holy Spirit’s own presence and activity in the believer, first giving the right to call God “Father,” then continually ensuring that this filial relationship is lived out in prayer that is truly conformed to the Father’s will.

A textual detail from the Aramaic Peshitta sharpens the opening of this arc. Where the Greek of Romans 8:15 reads simply “Abba, Father,” the Peshitta renders it “Father, our Father,” making explicit what the Greek already implies by context: adoption is not an abstract status but a possessive, covenantal belonging. This article follows that filial cry through the whole of Romans 8:15‑27, and then further, into the mystical tradition of St John of the Cross and St Thérèse of Lisieux, to show that the Spirit’s groaning is not a mere accompaniment to the Christian life but its hidden heartbeat — the fire without which adoption remains a title unlived, and prayer a word without breath.

The Biblical Foundation

Adoption and the Grammar of “Our”

Paul’s declaration in Romans 8:15 stands in deliberate contrast to what precedes it: “For you did not receive the spirit of slavery to fall back into fear, but you have received the Spirit of adoption.” The contrast is between two spirits and two postures before God — servile fear versus filial confidence. Because believers are adopted, they are no longer merely subjects of God but sons and daughters, entitled to address him by the most intimate title available, “Abba.”

The Aramaic Peshitta makes this filial logic grammatically explicit, rendering the cry as “Father, our Father.” The Greek states simply that believers cry “Abba, Father,” without an expressed possessive; the Peshitta supplies it. The two are not in tension: the Greek implies by context what the Peshitta states outright. Because believers have been adopted, the “Father” they cry out to is not a generic designation of deity but a particular, covenantal, possessive relation. This is why the Church’s own prayer, taught by the Son himself, begins not “Father” but “Our Father, who art in heaven.” The possessive “our” carries a double sense: it expresses ownership (“he is mine”) and it expresses communion (“he is ours, together with all the saints”). Adoption is never a private transaction between the isolated soul and God; it is simultaneously personal and ecclesial.

Creation, Believers, and the Spirit: A Threefold Groaning

Adoption, however, is lived out within a world still marked by decay, and Paul is unflinching about this tension. Romans 8:18‑27 moves through three groanings, all built on the same Greek root (stenazo / stenagmos):

  • Creation groans (v. 22): the entire cosmos, subjected to futility, longs for liberation from decay.
  • Believers groan (v. 23): even those who have received “the firstfruits of the Spirit” groan inwardly, awaiting the full manifestation of their adoption — the redemption of their bodies.
  • The Spirit groans (v. 26): the Holy Spirit intercedes for the saints with “groanings too deep for words.”

This threefold groaning is not a contradiction of the confident cry of verse 15; it is its necessary companion. The believer who cries “Abba, our Father” already possesses the Spirit of adoption, yet still awaits its full, bodily outworking. This is Paul’s “already/not yet”: already justified, adopted, and sealed with the Spirit (v. 15; cf. Eph 1:13‑14); not yet raised and glorified. The groan of verse 23 is therefore not a cry of doubt but of eager longing — the honest ache of a child who knows whose he is and still awaits the fullness of what that means.

The Father Who Searches Hearts, and the Spirit Who Intercedes

The Spirit’s groaning is not the cause of creation’s or the believer’s groaning, but its divine response and transformation. Paul writes: “he who searches the hearts knows what is the mind of the Spirit, because the Spirit intercedes for the saints according to the will of God” (v. 27). Two things are asserted about the Father here. First, he “searches the hearts” — he knows the believer completely, in a way that exceeds the believer’s own self-knowledge. Second, this same Father “knows the mind of the Spirit,” because the Spirit’s intercession, unlike the believer’s own halting prayer, is always “according to God” — in perfect harmony with the Father’s will.

This intercession is necessary precisely because of human weakness. “The Spirit himself helps us in our weakness. For we do not know what to pray for as we ought, but the Spirit himself intercedes for us with groanings too deep for words” (v. 26). Left to itself, human prayer is liable to confusion, self-interest, or simple inarticulacy in the face of suffering; Scripture elsewhere warns that prayer can be sought amiss, spent on one’s own passions. Against this constant danger, the Spirit’s groaning functions as a divine safeguard, taking up the believer’s inarticulate longing and reshaping it from within, so that what rises to the Father is a prayer conformed to his purposes rather than the believer’s confused desire. The believer’s own words are not worthless, but natural weakness makes the Spirit’s wordless intercession indispensable if prayer is to be, in Paul’s phrase, prayer “as we ought.”

The Mystical Dimension: The Groaning as Living Flame

John of the Cross and the Flares of Divine Love

What Paul describes theologically, St. John of the Cross describes experientially. In The Living Flame of Love, he portrays the soul in advanced union with God as a living fire, from which the Holy Spirit sends upward “flares” or “sparkles” — sudden, intense movements of love toward God. These flares are not merely human emotions. They are divine operations in the soul: movements of the Spirit’s own love, burning within the believer, possessing divine merit precisely because through them the soul loves God with the very love God has poured into it.

John makes a striking claim: in this state, the soul can, in a sense, “give God to God.” The Holy Spirit, dwelling within her, becomes the means by which she loves God and, in him, others; she can “give” this divine love to whomever she wills in prayer and charity. This is not magic but the logic of indwelling: what God gives, he lets the soul give back to him and through him to others. Read alongside Romans 8, the Spirit’s groaning and the Spirit’s flares are two descriptions of the same reality: the Spirit’s own love and intercession, active within the believer, transforming weakness and longing into something that burns.

Thérèse and Paul: Without the Fire of Charity, Nothing Counts

St. Thérèse of the Child Jesus draws out the consequence of this fire for Christian action. Echoing 1 Corinthians 13, she insists that without charity — the fire of love — all gifts are empty: evangelisers would not evangelise, martyrs would not die out of love, and every word and action would be worthless (see Story of the Soul, Manuscript B). This fire is not a human emotion but the Holy Spirit’s own love burning in the heart — the same reality Paul names when he writes, “If I have not love, I am nothing” (1 Cor 13:2‑3).

The groanings of the Spirit, then, are not peripheral spiritual experiences to be sought or avoided according to taste. They are the very source of authentic Christian action. Without them, ministry becomes activity without life, and suffering hardens into bitterness rather than opening onto glory. With them, the cry of adoption in Romans 8:15 finds its fulfilment: the child who calls out “Abba, our Father” is carried, sustained, and set ablaze by the very Spirit who prompted the cry in the first place.

The Trinitarian Movement of Prayer

Taken as a whole, Romans 8:15‑27, read with John of the Cross and Thérèse, discloses a single Trinitarian movement in four interlocking moments.

First, the Spirit of adoption moves the believer to cry, “Father, our Father” — the fruit of a new relationship, presupposing that one has already been made a son or daughter through grace.

Second, that same Spirit groans within the believer — and within creation and the believer’s own longing for redemption — interceding in a manner that transcends human articulation, always “according to God” rather than the believer’s unformed desire.

Third, the Father, who searches all hearts and therefore knows the Spirit’s mind perfectly, receives this intercession and, in receiving it, perfects the believer’s prayer, rejoining it to his own will.

Fourth, this same Spirit, dwelling in the soul as a living flame, sends up flares of love that transform weakness into charity, prayer into mission, and suffering into a share in the world’s redemption — so that, in Thérèse’s words, the fire that makes evangelisers evangelise and martyrs die out of love is the very fire first kindled by the cry of adoption.

The Son is the ground of the entire dynamic throughout, even where he is not always named. It is through the Son that believers receive adoption in the first place, and through him, in the Spirit, that access to the Father is opened at all. Prayer in Romans 8 is therefore never a private transaction between an isolated soul and a distant God; it is a Trinitarian event in which the Spirit prompts, groans, intercedes, and burns, and the Father receives — all of it grounded in the Son’s mediation.

Practical Consequences

1. Pray the “Our” Deliberately

Because adoption is communal as well as personal, the believer’s cry of “Father” is rightly prayed as “our Father” — a safeguard against a privatised spirituality that forgets the Church.

Practice: When praying the Lord’s Prayer or any personal address to God as Father, consciously hold in mind the communion of all the adopted — the whole Church, living and departed — to whom this Father equally belongs.

2. Embrace Weakness and Wordless Prayer as a Place of Encounter

Since the Spirit’s intercession is promised “in our weakness,” and his groaning is “too deep for words,” inarticulate prayer is not a failure but frequently prayer’s very substance.

Practice: In seasons of confusion, dryness, or grief, resist manufacturing eloquent words. Rest in silence, sighs, or tears, trusting that the Spirit’s groaning is supplying what words cannot.

3. Test Desires Against the Father’s Will

Because the Spirit intercedes strictly “according to God,” and Scripture warns that prayer can be sought amiss for the sake of one’s own passions, personal desires need habitual discernment rather than automatic trust.

Practice: Before petitioning God for a specific outcome, ask: “Is this desire already conformed to your will, or do I need the Spirit to reshape it first?”

4. Cultivate Receptivity to the Flares of Love

John of the Cross’s “flares” are sudden movements of love that arise in the soul and require attentiveness and docility.

Practice: In daily life, pause to notice sudden movements of compassion, gratitude, or longing for God, and offer them back to him as prayer rather than letting them pass unnoticed.

5. Prioritise Charity Over Activity

Thérèse’s insight challenges the temptation to measure spiritual life by external achievement; without the fire of charity, even impressive works are empty.

Practice: Before undertaking any ministry or apostolate, ask: “Is this flowing from the Spirit’s love and intercession in me, or from my own ambition?”

6. Unite Suffering with the Groaning of Creation and the Spirit

Suffering, when united with the Spirit’s groaning, becomes redemptive, joining the cosmic drama of Romans 8 and participating in the birth pangs of the new creation.

Practice: In times of pain or trial, consciously offer suffering in union with Christ and the Spirit’s intercession for the world, rather than bearing it in isolation.

Conclusion

Romans 8:15‑27 presents a single, unbroken movement: the Spirit of adoption gives believers the right and the impulse to cry, “Father, our Father” — a cry the Aramaic Peshitta renders with explicit possessive force, underscoring what the Greek already implies. Yet this filial cry does not stand alone. It is set within the groaning of a still-unredeemed creation, the groaning of believers who await the fullness of their adoption, and above all the groaning of the Spirit himself, interceding according to the will of the Father who searches all hearts. Read with John of the Cross and Thérèse of Lisieux, this groaning is unveiled as a living flame — the fire of charity without which prayer becomes empty words, ministry becomes activity without life, and suffering becomes bitterness rather than birth. Together, adoption and groaning form the hidden heartbeat of the Church: a Spirit who cries “Abba” within us, groans within us, and burns within us, so that our weakness becomes prayer, our longing becomes love, and our whole life becomes, in the Spirit, a return to the Father who is truly and forever ours.

Bibliography

Primary Sources

  • The Holy Bible (Romans 8; 1 Corinthians 13), Greek New Testament and Aramaic Peshitta text of Romans 8:15.
  • John of the Cross. The Living Flame of Love.
  • Thérèse of Lisieux. Story of a Soul and related writings.

Secondary Sources

  • BibleHub. “Romans 8:15.” Various translations, interlinear, and commentaries.
  • BibleHub. “Romans 8:22‑27.” Various translations and commentaries.
  • Bill Mounce. “Who’s Doing the Groaning? (Rom 8:26).” Monday with Mounce, 2012.
  • GotQuestions.org. “How does the Spirit intercede for us with groanings that cannot be uttered?” 2022.
  • Sacred Texts Guide. “Romans 8:26‑27 Meaning (The Intercession of the Holy Spirit).”
  • Precept Austin. “Romans 8:15 Commentary” and “Romans 8:22‑23 Commentary.” 2022.
  • The Gateway. “The Sound of Groaning: A Reflection on Romans 8:18‑30.” 2023.
  • Words on the Word. “The Good News of God’s Groans.” 2024.