How did the apostles read OT restoration prophecies?

The strongest evidence for how the apostles understood prophetic restoration is how they actually quote it. Three independent New Testament citations — by three different speakers, in three different settings, in three different New Testament books — all introduce the quotation with a "this is that" formula and treat the prophecy as inaugurated now.

Peter on Joel — Acts 2 = 71% coverage of LXX Joel 3

At Pentecost, Peter quotes Joel 2:28-32 (LXX Joel 3:1-5). Acts 2:16:

ἀλλὰ τοῦτό ἐστιν τὸ εἰρημένον διὰ τοῦ προφήτου Ἰωήλ.

"But this is that which has been spoken through the prophet Joel." — Acts 2:16 (TAGNT)

The verb is the equative copula estin (G1510, V-PAI-3S) — direct identity, not analogy. "This is that." The conjunction starting v. 16 is alla (ἀλλά) — strong adversative — Peter is countering the drunkenness theory of v. 15: this is not that, it is this. Pentecost is what Joel announced.

A lemma-by-lemma comparison of Acts 2:16-21 against LXX Joel 3:1-5 yields 41 shared lemmas with 71% coverage of the source and 67% coverage of the citation. That is dense verbal quotation, not a paraphrase. And Peter makes one telling alteration: Joel's "after these things" (μετὰ ταῦτα) becomes "in the last days" (ἐν ταῖς ἐσχάταις ἡμέραις) in Acts 2:17. Peter is not misremembering; he is interpreting. Joel's "after these things" — indefinite future — is what Peter is calling "the last days," and they have arrived.

Peter does not say the Joel prophecy will be fulfilled later. He says it is being fulfilled now, in the speaking-in-tongues episode his audience has just witnessed. The Spirit-outpouring oracle is treated as inaugurated. The "great and notable day of the Lord" (Joel 3:4 LXX / Acts 2:20) is treated as begun.

James on Amos 9 — Acts 15 = 44% coverage of LXX Amos 9

At the Jerusalem Council, the question is whether Gentiles must keep the Mosaic law to enter the people of God. James settles it by citing Amos 9. Acts 15:15-16:

καὶ τούτῳ συμφωνοῦσιν οἱ λόγοι τῶν προφητῶν, καθὼς γέγραπται· μετὰ ταῦτα ἀναστρέψω καὶ ἀνοικοδομήσω τὴν σκηνὴν Δαυὶδ τὴν πεπτωκυῖαν...

"And with this the words of the prophets agree, as it is written: 'After these things I will return and rebuild the fallen tent of David...'" — Acts 15:15-16 (TAGNT)

The introductory formula is τούτῳ συμφωνοῦσιν οἱ λόγοι τῶν προφητῶν — "with this the words of the prophets agree." The pronoun τούτῳ points to the just-narrated Gentile inclusion (Acts 15:7-14, Peter on Cornelius). The prophets agree with what is happening now, in Gentile incorporation.

A lemma comparison of Acts 15:16-17 against LXX Amos 9:11-12 yields 27 shared lemmas with 44% / 35% coverage. The decisive variant: LXX Amos 9:12 reads κατάλοιπος ἀνθρώπων ("remnant of mankind") where the MT reads שְׁאֵרִית אֱדוֹם ("remnant of Edom"). The two readings differ by one Hebrew letter (אֱדוֹם / אָדָם) and one vocalization. James's argument for Gentile inclusion requires the LXX vocalization — and the apostolic council, with the Holy Spirit (Acts 15:28), accepts it.

Note what James does not say. He does not say "the Davidic-tent rebuilding awaits a future earthly throne in Jerusalem and the Gentile mission is unrelated." He says the prophets agree with the Gentile mission — the Davidic-tent restoration is Gentile incorporation. James reads Amos 9 as fulfilled in what Peter just narrated.

Hebrews on Jeremiah 31 — Heb 8 = 79% coverage of LXX Jer 38

The author of Hebrews quotes Jeremiah 31:31-34 (LXX Jeremiah 38:31-34) — the only place in the entire Hebrew Old Testament where the phrase berit chadashah (בְּרִית חֲדָשָׁה, "new covenant," H1285 + H2319) appears. The quotation runs across Hebrews 8:8-12; the verdict is in Hebrews 8:13:

ἐν τῷ λέγειν καινὴν πεπαλαίωκεν τὴν πρώτην· τὸ δὲ παλαιούμενον καὶ γηράσκον ἐγγὺς ἀφανισμοῦ.

"In saying 'new,' he has made the first old. And what is becoming old and growing aged is near to vanishing." — Hebrews 8:13 (TAGNT)

A lemma comparison of Hebrews 8:8-12 against LXX Jeremiah 38:31-34 yields 49 shared lemmas with 79% / 69% coverage — among the densest OT-NT quotations in the canon.

The verb pepalaiōken (πεπαλαίωκεν, G3822) is perfect active indicative — completed action with ongoing results. The very act of God calling a covenant "new" in Jeremiah 31 was itself the declaration that the previous one was obsolete. The author's grammar leaves no opening for future reinstatement of the first covenant. Becoming obsolete (παλαιούμενον, present passive participle) and growing aged (γηράσκον, present active participle) describe the present state. Near to vanishing (ἐγγὺς ἀφανισμοῦ) names the trajectory.

The new covenant is not deferred in Hebrews. It is treated as already inaugurated through Christ's blood (Hebrews 9:15; 10:16-17, citing Jeremiah 31 again).

The shared shape

Three independent witnesses, three different speakers, three different prophetic books, three different settings:

• Peter on Joel — Acts 2:16 — τοῦτό ἐστιν τὸ εἰρημένον ("this is that which has been spoken")
• James on Amos — Acts 15:15 — τούτῳ συμφωνοῦσιν οἱ λόγοι τῶν προφητῶν ("with this the words of the prophets agree")
• Hebrews on Jeremiah — Heb 8:13 — πεπαλαίωκεν τὴν πρώτην ("he has made the first obsolete")

Each one introduces the prophecy with a "this is that" formula. Each one treats the prophecy as fulfilled — inaugurated, in motion, present. None of them defers fulfillment to a future Mosaic-Davidic political form.

The pattern: inaugurated already, consummated future

This is not collapsing all eschatology into the present. The same New Testament that says these prophecies are fulfilled also speaks of a parousia, a resurrection, and a final consummation (1 Co 15; Rev 21-22). The pattern is consistent across the canon:

• Joel's Spirit-outpouring is inaugurated at Pentecost (Acts 2); its full effect — heaven and earth signs, the great day of the Lord — awaits consummation.
• Amos 9's Davidic-tent restoration is inaugurated in Gentile incorporation (Acts 15); its full effect — nations seeking the Lord, plowman overtaking reaper — awaits consummation.
• Jeremiah 31's new covenant is inaugurated in Christ's blood (Heb 8); its full effect — all knowing the Lord from the least to the greatest — awaits consummation.

This is the apostolic interpretive grammar. Three for three. Joel, Amos, Jeremiah — each picked up by an apostle and read as fulfilled, not deferred.

For the apokatastasis pantōn case (Acts 3:21), the lexical neighborhood, the Edenic-reversal vocabulary, and the absence of a temple in Revelation 21:22, see Dispensationalism Part 3 — The Restitution of All Things. For the structural framework (mystery, parenthesis, two-track seed) see Part 1; for the four-covenant trajectory see Part 2.