This episode covers the fourth segment of Section 5 (The Spiritual Realm During Israel's Divided Kingdom) and the first segment of Section 6 (The Spiritual Realm in Judah after the Fall of Israel). In three passages from the book of the prophet Isaiah, we examine the Bible's sole text describing seraphim, another warning against consulting mediums and spiritists, and the text that spawned our culture's identification of Lucifer as Satan.