Prophet of Judah
Isaiah
eye-ZAY-uh · c. 765-681 BC (approximate)
A prophet active in Jerusalem across the reigns of four kings of Judah, whose book is the most extensively quoted Old Testament source in the New Testament, cited repeatedly by Jesus himself and applied to him as the fulfillment of its prophecies.
Life and work
Isaiah's prophetic career is dated by the book's own opening line to the reigns of Uzziah, Jotham, Ahaz, and Hezekiah, kings of Judah — placing his ministry roughly from the 740s to sometime after 701 BC, spanning some 40 years or more (Isaiah 1:1). He was married to a woman called 'the prophetess' and had at least two sons given symbolic names, Shear-jashub ('a remnant shall return') and Maher-shalal-hash-baz ('quick to plunder, swift to spoil') (Isaiah 7:3, 8:1-4).
His call to prophetic ministry came in a vivid temple vision 'in the year that King Uzziah died,' in which he saw the Lord high and exalted, surrounded by seraphim crying 'Holy, holy, holy,' and was commissioned after a seraph purified his lips with a burning coal (Isaiah 6:1-8). He responded, famously, 'Here am I; send me,' though the commission itself warned him that the people would not listen.
Isaiah served as a counselor to kings during moments of national crisis. When King Ahaz faced invasion by the allied armies of Israel and Syria, Isaiah urged him to trust God rather than seek Assyrian help, and delivered the sign of a child to be called Immanuel ('God with us') as assurance the threat would pass (Isaiah 7:1-16) — a passage the New Testament later applies to the virgin birth of Jesus (Matthew 1:22-23).
During Hezekiah's reign, Isaiah was the decisive prophetic voice through the Assyrian crisis of 701 BC, delivering oracles of assurance when Sennacherib besieged Jerusalem and announcing the Assyrian withdrawal (2 Kings 19; Isaiah 37). He also confronted Hezekiah over his illness, promising fifteen more years of life, and later rebuked him for showing Judah's treasures to Babylonian envoys, predicting a future Babylonian exile (2 Kings 20; Isaiah 38-39).
The book bearing his name moves across an enormous range of material: oracles of judgment against Judah and the surrounding nations (chapters 1-35), a historical interlude concerning Hezekiah and Sennacherib (chapters 36-39), and an extended message of comfort, restoration, and future hope, including the famous 'Servant Songs' describing a suffering servant who bears the sins of others (Isaiah 42, 49, 50, 52:13-53:12).
Jewish tradition (reflected in the Talmud) holds that Isaiah was martyred during the reign of the wicked King Manasseh, sawn in two — a tradition many scholars connect to the otherwise unexplained reference in Hebrews 11:37 to those who 'were sawn in two,' though this account appears nowhere in the Old Testament text itself and rests on later extra-biblical tradition rather than Scripture.
No other Old Testament prophet is quoted as extensively or as directly by Jesus and the New Testament writers. Jesus opened his public ministry in the Nazareth synagogue by reading from the Isaiah scroll and declaring it fulfilled that day (Luke 4:17-21), and the Gospel writers repeatedly frame John the Baptist, Jesus's ministry, and the crowds' unbelief as fulfillments of Isaiah's specific words (Matthew 3:3; Matthew 4:14-16; John 12:38-41).
Isaiah's influence extends into the book of Acts, where the Ethiopian eunuch is found reading aloud from Isaiah 53 — the suffering servant passage — when Philip meets him and explains that the passage speaks of Jesus (Acts 8:28-35), and into Paul's letters, where Isaiah is cited repeatedly in the argument of Romans 9-10 concerning Israel and the Gentiles.
- Occupation
- Prophet; court counselor to the kings of Judah
- Places
- Jerusalem
- Dates
- c. 765-681 BC (approximate) Traditional dating
Dating
His call is dated 'in the year King Uzziah died' (Isaiah 6:1), commonly placed at 740/739 BC, and his ministry ran at least through Hezekiah's reign. Jewish and early Christian tradition holds he was martyred — sawn in two — under Manasseh, possibly alluded to in Hebrews 11:37; this specific death account is extra-biblical, though ancient and widely received.
Extra-biblical evidence
The Great Isaiah Scroll (1QIsaa), Dead Sea Scrolls Discovered 1947, Qumran Cave 1; now in the Shrine of the Book, Israel Museum, Jerusalem
A complete Hebrew manuscript of the book of Isaiah dated to roughly 125 BC, over a thousand years older than the previously oldest known complete Hebrew copy — its text matches the later Masoretic tradition to a remarkable degree, though not identically.
Weight: Does not confirm Isaiah's biography, but provides powerful manuscript evidence for the antiquity and stable transmission of the book attributed to him.
Bulla reading 'Isaiah the prophet' (disputed) Clay seal impression excavated near the Temple Mount, Jerusalem, published 2018 by archaeologist Eilat Mazar
A small clay bulla bearing the partial inscription '[Belonging to] Isaiah, nvy,' found near a bulla naming King Hezekiah, has been proposed as a seal impression of the prophet himself, though the word 'nvy' lacks the final aleph that would make it unambiguously read 'the prophet' rather than a personal name.
Weight: Genuine and intriguing archaeological find, but the reading is disputed among scholars and falls short of certain identification — should be presented as a possible, not confirmed, link to the prophet.
Scripture references
- Isaiah 1-66 — The prophetic book bearing his name
- 2 Kings 19-20 — His role advising Hezekiah during the Assyrian crisis
- Matthew 1:22-23 — His Immanuel prophecy applied to Jesus's birth
- Luke 4:17-21 — Jesus reads from Isaiah in the Nazareth synagogue and applies it to himself
- Acts 8:28-35 — The Ethiopian eunuch reading Isaiah 53, explained by Philip as pointing to Jesus
Further reading
Reflect
Isaiah answered, 'Here am I, send me' before hearing the assignment — could you volunteer before knowing the details?
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