Looking at the past, the present and the future of Israel, God makes it clear from the allegory of two eagles and a vine, that he is totally sovereign over history, the true king of his people, and working all things towards Jesus.
Ezekiel sees a vision of God's judgment falling on the idolatrous Israelites still in Jerusalem. The promise of mercy in the shape of new hearts is held out to the exiles.
How big is your view of God? Ezekiel's vision, before we hear God's speech, is a reminder that God is immense, holy, just and merciful. He always reveals himself through his Word, Jesus, in the power of the Spirit.