How is the nation of Israel like the burning bush?
The nation of Israel is likened to the burning bush because the bush was burning with fire but was not consumed. In the same way, Israel continues to exist and is not consumed, so the fire does not destroy the nation.
Les teaches that the amazing feature of the burning bush was that it burned with fire but was not consumed, and he says, "so also is the nation of Israel." The comparison is that Israel, like the bush, has fire but is not burned up. The surrounding context has Moses turning aside to see why the bush was not burned, and the Lord—Jehovah—calls to him from the bush, tells him to remove his shoes because the ground is holy, and identifies Himself as the God of Abraham, Isaac, and Jacob. Les also notes that God and Jehovah are used synonymously because Christ is God.