Ephesians 2:20 → Psalm 118:22

Paul says the church is "built on the foundation of the apostles and prophets, with Christ Jesus Himself as the cornerstone" (akrogōniaios), then names the structure that rises on Him: "a holy temple in the Lord... a dwelling place for God in His Spirit" (Eph 2:21-22). The primary stone-allusion here is Isaiah 28:16's foundation sense — the "tested... precious cornerstone, a sure foundation" Yahweh lays in Zion (documented at Eph 2:20 → Isa 28:16). The Psalm 118:22 strand is genuinely present but secondary and diffuse: Paul does not echo the psalm's distinctive rejection-vindication career (no "rejected by builders"), and his Greek runs to akrogōniaios / foundation rather than the psalm's kephalē gōnias ("head of the corner"). What Ps 118:22 contributes is its place in the bundled OT stone-cluster (Ps 118:22 + Isa 28:16 + Isa 8:14) that the NT routinely fuses, and the ecclesiological reach the apostles drew from it — Christ the chosen Stone as the cornerstone of the new temple-people, the very move Peter makes at 1 Pet 2:4-7 and Paul makes here. This is therefore an Echo, not a citation, and the method is Longitudinal Theme (Temple and Presence) + Promise-Fulfillment, not typology (Eph 2:20 advances no rejected-then-vindicated correspondence — it announces the foundation-stone Yahweh promised now historically laid and built upon — so by the anti-default rule the typological reading of Ps 118:22 stays at Matt 21:42 / Acts 4:11, while Eph 2:20 inherits only the stone-cluster's temple-fulfillment). The telos lands not in architecture but in belonging: to be joined to this cornerstone is to be built into God's own dwelling on a foundation that cannot be rejected away — the marvelous deed of the LORD (Ps 118:23) become the security and glory of those who are His house, which makes Christ the cornerstone desirable, not merely structural.