The book of Ezekiel is a book of prophecy that revolves around the life and ministry of the prophet. It begins with Ezekiel's call to ministry in chapters 1-3. Ezekiel had been taken to Babylon in the first wave of exiles before the full destruction of Jerusalem that would be coming soon. With his call to prophesy, he became a "street preacher" among the exiled Jews for 22 years. He was called by God to be a "watchman for the house of Israel." (3:17)
In his task as "watchman," Ezekiel warns of the coming destruction of Jerusalem. This destruction would be God's judgment on the sins of the people. He also spoke to the surrounding nations, telling them of God's judgment on their sins as well. But Ezekiel also spoke of the faithfulness of God to one day restore the land and restore his people and bring glory to himself in the fulfillment of his promises.