Why does Isaiah 45 call Cyrus the anointed of God?
Because YHWH's monotheism claim — there is no other god — requires that even a pagan Persian king serves YHWH's purposes, and Isaiah 45:7’s sovereignty over darkness and calamity is the theological floor that makes that claim possible.
Isaiah 45 begins with one of the most surprising sentences in the Old Testament: "Thus says Yahweh to his anointed, to Cyrus" (Isaiah 45:1). Cyrus is a Persian king. He does not know YHWH. He has not been born yet when Isaiah writes. And he is called YHWH's māšîaḥ — his anointed — the same word the Greek translates τῷ χριστῷ μου, "to my Christ."
The question that follows naturally is: how can a pagan conqueror be YHWH's anointed? The oracle answers it with two steps.
Step one: the monotheism claim
Verses 5 and 6 ring out the foundation: "I am Yahweh, and there is no other [אֵין עוֹד]; besides me there is no God... that they may know... there is none besides me. I am Yahweh, and there is no other." The phrase אֵין עוֹד — "there is none other" — appears twice. The claim is absolute: YHWH is not one god among many. He is the only one.
If that is true, then every king and every conquest serves YHWH whether the king knows it or not. Cyrus's decree to release Jewish exiles and fund the rebuilding of the temple was not an accident of Persian politics — it was an instrument YHWH had prepared. The anointing language is the strongest possible expression of that instrumentality.
Step two: verse 7 locks the floor
But the monotheism claim requires a foundation. If there were a god of light and a separate power of darkness, then the dark side of history — exile, defeat, suffering — would not be YHWH's domain. A rival god could own it. Then YHWH could not be sole Sovereign, and Cyrus would be navigating a cosmic conflict between powers.
Isaiah 45:7 closes that gap: "I form light and create darkness, making well-being and creating calamity — I, Yahweh, do all these things." Every domain a rival deity might occupy is already filled. Light is YHWH's. Darkness is YHWH's. Well-being is YHWH's. Calamity is YHWH's. There is no unclaimed territory, no shadow quarter a second power could rule. The verse is the floor under the claim "there is no other."
The logic is tight: YHWH can call Cyrus his anointed because YHWH is the God who creates darkness and calamity. If adversity belonged to a rival, YHWH would not control the exile that Cyrus ends. Because adversity is his to create and his to remove, he can give a pagan king the role of deliverer without contradiction.
Where the oracle ends
The "no other" claim in verse 5 does not stay in chapter 45. It reaches its climax at verse 23: "To me every knee shall bow, every tongue shall swear." The New Testament takes this up as the universal confession of the one God — Romans 14:11 quotes Isaiah 45:23 directly, and Philippians 2:10–11 echoes it over the name of Jesus. The verse that grounds YHWH's exclusive sovereignty in creation of both light and darkness ultimately funds the NT claim that every knee bows to the God who entered history in Jesus. Isaiah 45:7 is not a free-standing meditation on theodicy; it is the stone at the bottom of a very tall argument.
For the full Cyrus oracle, the monotheism refrain, and the historical context of Persian religion, see I Form Light and Create Darkness.
Does Isaiah 45:7 mean God creates evil?
No — the Hebrew word רָע (rāʿ, H7451) in this verse means calamity or adversity, not moral wickedness, and the word it stands against (שָׁלוֹם, welfare/well-being) locks that meaning in place.
What do the Dead Sea Scrolls say about Isaiah 45:7?
The Great Isaiah Scroll (1QIsaᵃ, c. 125 BC) reads טוֹב (good) where the standard Hebrew text reads שָׁלוֹם (well-being/peace) — and the oldest Greek translation sides with the standard Hebrew, not with the scroll. The two oldest witnesses diverge, and the variant is unresolved.
What is the difference between Isaiah 5:20 and Isaiah 45:7?
Isaiah 5:20 pronounces judgment on people who invert the poles — calling evil good, calling darkness light. Isaiah 45:7 does the opposite: YHWH claims both poles simultaneously, without inverting anything. The two verses are photographic negatives of each other, built from the same four Hebrew words.
Why does Isaiah 45:7 use the Genesis creation verb for darkness and calamity?
The Hebrew verb בָּרָא (bārāʾ, H1254) — the same verb as Genesis 1:1, reserved in the Qal for God alone — is deliberately placed on the troubling poles of the verse to intensify the sovereignty claim: YHWH does not merely permit darkness and calamity, he creates them.