In this comprehensive study, Christopher Enoch investigates the biblical and historical meaning of 'The Day of the Lord' (Yom Yahweh). While popular end-times teaching treats the Day of the Lord as a single apocalyptic event waiting at the end of the world, a close examination of the Hebrew prophets, ancient Babylonian chronicles, the Dead Sea Scrolls, Flavius Josephus, the Mishnah, and the New Testament reveals a recurring historical pattern of divine judgment. We walk through five prophetic case files—including the Assyrian conquest of Samaria (Amos 5), Nebuchadnezzar's victory over Egypt at Carchemish in 605 BC (Jeremiah 46), the Babylonian destruction of Jerusalem in 586 BC (Lamentations 2), and the cosmic imagery of Isaiah 13—before examining how Jesus, Peter, and first-century Jewish writers applied these exact prophetic idioms to the Roman siege of Jerusalem in 70 AD. Plus, we explore the Greek grammar of 'the Lord's Day' in Revelation 1:10, the 616 Latin manuscript variant in Revelation 13:18, the scholarly consensus on 2 Peter, and how the illusion of a single closed Bible canon distorts how we read ancient prophecy. Chapters: 0:00 The Day of the Lord: Memory vs. Prediction 2:58 Four Levels of Historical Inquiry 7:09 Yom Yahweh: Hebrew Grammar and Prophetic Occurrences 13:04 Amos 5: Darkness and Assyrian Exile in 722 BC 16:18 Case File 1: Jeremiah 46 and the Battle of Carchemish (605 BC) 19:35 Case File 2: Zephaniah, Lamentations 2, and the Fall of Jerusalem (586 BC) 23:00 Case File 3: Ezekiel 30 and Nebuchadnezzar's Campaign Against Egypt 24:08 Case File 4: Isaiah 13, Cosmic Idioms, and the Fall of Babylon 27:30 Case File 5: Obadiah, Malachi, and Joel's Locust Plague 32:21 Extra-Biblical Evidence: Qumran's Damascus Document and 1 Enoch 35:41 Flavius Josephus on 70 AD and the Fulfillment of Daniel 40:41 The Mishnah, the 9th of Av, and Talmudic Debates on Prophecy 45:13 First-Century Fulfillment: Malachi's Elijah and Peter in Acts 2 48:42 Luke 21 and Matthew 24: Days of Vengeance on Jerusalem 54:46 2 Thessalonians 2 and the Forgery Debate Around 2 Peter 3 1:01:36 Revelation 1:10: What Is 'The Lord's Day'? 1:07:20 Dating the Book of Revelation and Evaluating Irenaeus 1:25:12 Live Q&A: Why Critical Scholars View 2 Peter as Pseudepigrapha 1:38:59 Deconstructing Dogma: The Gospel of Mark vs. the Gospel of John 1:50:15 Deuteronomy 18, Matthew 19, and What Jesus Taught on Eternal Life 1:55:29 Matthew 9:13 & Hebrews 12: The Righteous and True Repentance 2:04:31 Revelation 13:18: Nero Caesar and the 616 Latin Manuscript Variant 2:14:13 Daniel 11 vs. Historical Records: Ex Eventu Prophecy 2:18:38 Summary of the 4 Levels & The Illusion of a Closed Bible Canon