the righteous man from the east
The reference here seems to be to Cyrus, whose victories and rapid growth in power are here ascribed to the providence of God. (Isaiah 41:5-7) describe the effect upon the nations of the rise of the Persian power. They heartened each other, and made (Isaiah 41:7) new idols. At (Isaiah 41:8), the prophet addresses Israel. Since it was their God who raised up Cyrus, they should expect good, not evil, from him (Isaiah 41:8-20). (Isaiah 41:21-24) form a contemptuous challenge to the idols in whom the nations are trusting.