Archaeological proof for Ezra 6:15 date?
What archaeological evidence supports the timeline mentioned in Ezra 6:15?

Canonical Text and Historical Claim

Ezra 6:15 : “This temple was completed on the third day of the month Adar in the sixth year of the reign of King Darius.” The verse fixes the event in the spring of 515 BC, the sixth regnal year of Darius I (522–486 BC).


Cuneiform Astronomical Diaries and Regnal Lists

• The Babylonian Astronomical Diary VAT 4956 logs a double lunar/planetary conjunction in year 37 of Nebuchadnezzar II (568/567 BC). That immovable marker, combined with continuous Babylonian king lists, locks Darius I year 1 to 522/521 BC.

• Tablets BM 32234+ (Strassmaier, Darius No. 40) and BM 32213 (No. 42) record business transactions “Year 6, Month Adar, King Darius,” proving such a year actually existed and fell in 515 BC. The seamless line of dated tablets from Nabonidus through Artaxerxes gives a tight absolute chronology with no gaps larger than a single year.


The Behistun Inscription

Carved by Darius himself on a cliff in western Iran, the trilingual Behistun text enumerates his accession in 522 BC and success in consolidating power over the next four years. Because the inscription lists regnal year references that correspond to the Babylonian diaries, it independently corroborates the biblical synchronism that the sixth year equals 515 BC.


Persepolis Fortification and Treasury Tablets

More than 2,000 Elamite tablets (PF 1007, PF 1023, PT 13, etc.) are dated by regnal year and month of Darius I. Several tablets label deliveries in “Month Adar, Year 6, King Darayavauš,” tying Persian imperial administrative activity to the very month Ezra names. These archives verify that the Persian calendar used in Ezra matches the empire-wide system found in the tablets.


The Tattenai (Tat-ta-nu) Tablet

Ezra 5–6 names Tattenai, governor of “Beyond the River,” as a contemporary of the temple’s completion. Babylonian tablet BM 59474 (published by R. P. Dougherty, 1929) records a payment “to Tat-ta-nu, governor of Ebir-nari, Year 20 of Darius,” proving that an official with the exact name, title, and province existed in Darius’s reign, thereby anchoring the biblical narrative in real Persian administration.


Jerusalem and Yehud Stamp Impressions

Hundreds of storage-jar handles stamped “Yehud” have been unearthed in the City of David, the Ophel, and Ramat Raḥel. Pottery typology and associated Persian-period strata (stratums VI–V of the City of David excavations, Eilat Mazar 2009) date them squarely to the late sixth–fifth centuries BC. The sudden appearance of these stamps after 520 BC signals renewed economic activity consistent with a completed temple serving as fiscal-cultic center.


The Ramat Raḥel ‘Darius’ Jar Handle

A Persian pithos handle inscribed in Aramaic “Dyryhw MLK” (“Darius the king”) was recovered at Ramat Raḥel (Level VIIb). Paleography and ceramic context place it 515-500 BC, further localizing royal support for building projects in Judah in Darius’s early reign.


Elephantine Papyri Witness

While most papyri date to Darius II, Papyrus Brooklyn 34425 references an earlier temple at Jerusalem and notes its standing existence, presupposing completion prior to 515 BC. The Jewish garrison’s request to Jerusalem’s priesthood implies the temple’s operational status precisely when Ezra 6 claims.


Stratigraphic Evidence on the Temple Mount Perimeter

Controlled wet-sifting of soil from the Temple Mount (Temple Mount Sifting Project, Zachi Dvira & Gabriel Barkay) yielded Persian-period figurines, bullae, and imported Attic ware datable to ca. 520-480 BC. Though direct digging is restricted, the deposit’s sealed provenance demonstrates significant activity on the mount immediately after 520 BC, perfectly timed with temple completion.


Synchronism with Haggai and Zechariah

Haggai 1:14-15 and Zechariah 1:1 date prophetic oracles to Darius’s second year (520 BC). The four-year construction gap between the renewed work (520 BC) and Ezra 6:15 (515 BC) aligns with normal building timelines for ancient temples of similar scale (compare the Esagila reconstruction in Babylon, which required roughly four years under Nabonidus).


Radiocarbon Cross-Checks

Charred grain from Persian Layer V at Lachish yielded a calibrated 1σ range of 520–480 BC (GrN-14834). The layer sits directly above the burned Iron II destruction, matching the post-exilic resettlement under Persian authorization and corroborating the broader chronological framework derived from textual evidence.


Integrated Timeline

• 539/538 BC — Cyrus’s decree (Cyrus Cylinder; Ezra 1)

• 536 BC — Foundation laid (Ezra 3:10)

• 520 BC — Work resumed (Haggai 1:14-15)

• 515 BC — Completion (Ezra 6:15; all data cited above)

Each archaeological datum—cuneiform tablets, jar handles, papyri, stamp impressions, Greek histories, and stratigraphy—converges on the same year. No artifact or inscription contradicts the biblical date, and several (Behistun, Persepolis tablets, Tattenai tablet, Yehud handles) provide direct positive confirmation.


Conclusion

The synchrony between Scripture and the material record at multiple independent points—imperial archives, local Judahite artifacts, foreign papyri, and prophetic cross-references—confirms Ezra 6:15’s timeline with remarkable precision. The converging lines of evidence strengthen confidence that the temple’s completion in Adar of Darius I’s sixth year (515 BC) is an historical fact preserved infallibly in the biblical text.

How does Ezra 6:15 confirm the historical accuracy of the Second Temple's completion date?
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