Isaiah 6:9 is a prophecy to Israel that they will "hear but not understand"; that they will "see but not perceive" this word from God to the nation was evident even when Jesus, the Messiah, came to Israel. They heard Him and saw Him but did not understand Him or perceive who He was. As a result, a "spirit of slumber" is upon the people to this day (Isaiah 29:10, Romans 11:7-8). Nationally, Israel has not yet awakened to belief in Jesus.
But there is good news! The Jews are still Gods chosen people, and God promises their joyous redemption to come (Romans 11:25-27).
Angella Thomas delivers a two-pronged message of hope and challenge: Jewish readers will be given hope when they see the remedy for this historical blindness, and Christians will be challenged to join God in fulfilling the redemption of His people. "But Israel shall be saved in the LORD with an everlasting salvation...." Isaiah 45:17.