Romans 2:28-29 → Ezekiel 36:26-27

"A man is not a Jew because he is one outwardly, nor is circumcision only outward and physical. No, a man is a Jew because he is one inwardly, and circumcision is a matter of the heart, by the Spirit, not by the written code" (Rom 2:28-29). Paul's heart-circumcision blend has three OT donors, and the corpus already documents two: the command-and-promise of heart-circumcision from Deuteronomy (Rom 2:25-29 → Deut 10:16, with Deut 30:6) and the interiorized law of the new covenant (Rom 2:29 → Jer 31:33). This IP documents the third donor — the one that supplies the two words neither of the others can: "by the Spirit" (ἐν πνεύματι). Deuteronomy 30:6 promises that God Himself will circumcise the heart but does not say how; Jeremiah 31:33 promises the law written on the heart but leaves the writer's agent unnamed; only Ezekiel 36:26-27 joins the renewed heart to the named agent — "I will give you a new heart... I will remove your heart of stone and give you a heart of flesh. And I will put My Spirit within you and cause you to walk in My statutes." When Paul writes that true circumcision is "of the heart (καρδίας, G2588), by the Spirit (πνεύματι, G4151)," he is speaking the collocation that Ezekiel's oracle — and Ezekiel's alone — created. The Reference Type is Allusion, argued honestly at the shelf: there is no verbal chain to LXX Ezekiel 36 beyond καρδία and πνεῦμα themselves, but the agent-structure (the Spirit as the one who effects the heart's inward transformation, producing the obedience the flesh could not) is Ezekiel's distinctive contribution, and its presence as the third member of Paul's recognized three-text blend lifts the connection above a loose echo. The Connection Method is Promise-Fulfillment, not typology (per the anchor's method ruling — 36:25-27 is a promise oracle): the Spirit-wrought heart Ezekiel promised now exists, and its existence redraws the boundary of the covenant people — Jew or Gentile, the one in whom the surgery has happened is the true Jew. Longitudinal Theme rides secondary on the circumcision-of-the-heart thread (Deut 10:16 → Deut 30:6 → Jer 4:4 → Ezek 36:26-27 → Rom 2:29 → Phil 3:3 → Col 2:11), the trajectory TT 030 walks in full. The telos sits in Paul's last clause: such a man's "praise does not come from men, but from God" — the Spirit-circumcised heart is finally freed from performing for human eyes because it has found a better audience; the surgery's proof is a person who would rather have God's approval than the whole synagogue's applause, which is simply Ezekiel's new heart doing what stone never could — treasuring the God who gave it.