Hebrews 10:22 → Ezekiel 36:25

"let us draw near with a sincere heart in full assurance of faith, having our hearts sprinkled to cleanse us from a guilty conscience and our bodies washed with pure water" (Heb 10:22). The strongest lexical contact, verified at the vault's own shelves, is the closing phrase: Hebrews' "pure water" (ὕδατι καθαρῷ, G2513 + G5204) exactly matches LXX Ezekiel 36:25's "clean water" (ὕδωρ καθαρόν, same two lexemes tagged at source in both testaments' Reference shelves). The sprinkling verbs are close kin but — stated precisely, so the claim carries no more than the shelf warrants — not the same lexeme: Hebrews has ῥεραντισμένοι from ῥαντίζω (G4472), while LXX Ezekiel 36:25 has ῥανῶ from the simplex ῥαίνω; same ῥαν- root, cognate forms. Together the sprinkling-plus-pure-water combination lands on Ezekiel 36:25, and the context clinches the donor: five verses earlier Hebrews has just cited Jeremiah 31:33-34 (Heb 10:16-17), Ezekiel's twin new-covenant oracle, so the author is demonstrably arguing inside the new-covenant promise complex in which Ezek 36:25 is the cleansing clause — sprinkled clean, new heart, indwelling Spirit. The Reference Type is Allusion: an exact two-lexeme phrase plus a cognate verb, but no citation formula. The Connection Method is Promise-Fulfillment, not typology (per the anchor's method ruling — 36:25-27 is a promise oracle, and promises are fulfilled, not typed): what Yahweh promised to do with water, He has done through blood — "hearts sprinkled to cleanse us from a guilty conscience" is Ezekiel's sprinkling internalized, effected by the once-for-all offering the chapter has been expounding (10:10, 14, 19). Longitudinal Theme rides secondary on the cleansing-water thread (Num 19's water of purification → Ezek 36:25 → John 3:5 → Titus 3:5 → Heb 10:22), and the priestly washing of consecration (Exod 29:4) stands behind the "bodies washed" clause — Hebrews democratizes the priests' laver to the whole people, since all now draw near. The escalation is the direction of travel: in Ezekiel, cleansing prepares Israel to receive the sanctuary-presence of God (37:26-28); in Hebrews, the cleansed themselves enter the sanctuary through the curtain (10:19-20). The telos: the sprinkled conscience is not an end in itself — it exists so that we may draw near — cleansing is for communion, and the gospel's proof that the water has touched the heart is a people who actually want to come close to the God who once was unapproachable.