Adversus Marcionem IV.1's Citation of Isaiah 2.3 - 4 is Wholly Irenaean
Irenaeus (IV.34 directed against Marcion IV.34.1) Tertullian (IV.1 directed against Marcion) Scriptural source “Out of Zion shall go forth the law and the word of the Lord from Jerusalem… they shall beat their swords into ploughshares.” “Out of Zion shall go forth the law and the word of the Lord from Jerusalem… He shall judge among the nations.” Isaiah 2:3–4 “A new law has gone forth from the Lord over the whole earth.” “Another law and another word — the gospel and apostolic proclamation.” Isaianic ‘new law’ motif (Isa 2; Isa 51:4) “The prophets foretold the conduct, doctrine, and sufferings of the Lord.” “Isaiah long ago declared these things.” Prophetic fulfillment framework “Not another God, but the same one who spoke through the prophets.” “Difference of dispensation but one and the same God.” Anti-Marcionite monotheistic argument “The new covenant comes from the Lord’s advent.” “A new order under Christ.” New covenant theology “The word goes out to the nations.” “Judgment/light ...