Eight sermons in Isaiah 40-48 pose a challenge to Open Theism’s limitation of the Lord’s power and knowledge of the future. Rhetorical questions and declarations about the certainty of divine purpose are two literary strategies employed by Isaiah. Rhetorical interrogation and appropriate vocabulary and facts characterize the first sermon in Isaiah 40. These constitute a powerful indictment against Israel for her lack of trust in the Lord. According to Isaiah 46, He planned the creation from outside of time and history and implemented His plans within time and history. Isaiah 44 cites classic examples of His governance in world history, including His naming in advance a Persian king who would decree the rebuilding of Jerusalem. These sermons also cite the deeds of the Lord in dealing with Israel and the nations. The sermons, though addressed to Israel as a rebuke for her idolatry, also point out the error of Open Theism in that system’s demeaning of God and exalting of man.