Isaiah 8:14 → Psalm 118:22

These are the two great OT stone-texts the New Testament fuses into one Christ-stone, but honesty about the OT level must be kept first: there is no literary dependence of Isaiah upon the psalm. Isaiah 8:14 names Yahweh Himself as ʾeḇen negep̄ / ṣûr miḵšôl — "a stone of striking and a rock of stumbling" — to the two houses of Israel who will not regard the LORD of Hosts as holy (8:13); the stone is an obstacle of judgment, with no building, no rejection, no cornerstone, no vindication. Psalm 118:22 narrates the opposite arc — ʾeḇen māʾăsû habbônîm hāyəṯāh lərōʾš pinnāh, "the stone the builders rejected has become the cornerstone" — a rejection-then-vindication career wrought by the LORD (118:23), with no stumbling and no judgment-function. The only shared element at the OT level is the bare lexeme ʾeḇen and the broad stone-imagery; none of the distinctive vocabulary overlaps (Isaiah's negep̄ / miḵšôl never occurs in the psalm; the psalm's māʾas / bônîm / rōʾš pinnāh never occurs in Isaiah). This is therefore an Echo, not an Allusion or Quotation — the bond is canonical and retrospective, not a case of Isaiah drawing on the psalm. What coordinates the two is the Longitudinal Theme of the divinely-laid stone running across the canon (Isa 8:14 + Isa 28:16 + Ps 118:22 + Zech 4:7 + Dan 2) and its Redemptive-Historical Progression toward a single referent: each text supplies one irreducible function — Isaiah the judgment-pole (the stone is danger to the unfaithful), the psalm the rejection-vindication career — and the NT bundles them (Rom 9:33 fuses Isa 8:14 with Isa 28:16; 1 Pet 2:6-8 stacks all three) because they converge in the one Christ they could not name on their own. It is not Typology between these two OT texts (neither prefigures the other; the typological consummation belongs to Christ, not to the relation of psalm and prophet — see TT 154) and not Promise-Fulfillment (neither text predicts the other). The deletion-test telos: held together, the two stones make Christ desirable, not merely foreshadowed — He is the very Stone the builders threw away who has become the Head of the corner (Ps 118:22), and the same Stone is sanctuary to all who take refuge in Him even as He is the rock the proud trip over (Isa 8:14). To behold that the One rejected by men is the cornerstone God Himself prized, and that hiding in Him is the difference between stumbling and standing, is to find the Stone not dreadful but precious — "to you who believe, He is precious" (1 Pet 2:7) — so that beholding the vindicated Stone we are built upon Him and into His image.