The Book of Enoch contains various accounts and teachings attributed to the biblical figure Enoch. It is important to note that the Book of Enoch is not part of the canonical Bible and is considered apocryphal by most Christian denominations. Nevertheless, it provides an interesting perspective on metaphysical concepts.

Within the Book of Enoch, there are references to the secrets or mysteries that Enoch learned during his encounters with heavenly beings and his journeys through the spiritual realms. Note: there is no specific numbering system for these secrets in the book...

1. The Divine Chariot: Enoch is said to have witnessed a heavenly vision known as the "chariot vision." This vision describes a complex celestial chariot, often associated with the throne of God, which reveals the divine order and hierarchy of the spiritual realms.

2. The Nature of Angels: Enoch encounters various types of angels during his journeys. He learns about their roles, hierarchies, and the tasks they perform in the cosmos. The book provides insights into the angelic realms and their connection to humanity.

3. The Heavenly Tablets: Enoch is said to have been shown heavenly tablets containing divine knowledge and secrets. These tablets are believed to contain information about the past, present, and future, including prophecies, celestial laws, and cosmic principles.

4. The Fallen Angels and Nephilim: The Book of Enoch discusses the story of fallen angels (referred to as Watchers) who came to Earth, interacted with humans, and produced hybrid offspring known as Nephilim. This account explores the spiritual implications of these events.

5. The Geography of Heaven and Earth: Enoch's celestial journeys allegedly allowed him to explore different levels of heaven and gain insights into the nature of the cosmos. The book describes various heavenly realms, such as the Garden of Eden, Paradise, and the dwelling places of the righteous.

6. The Secrets of Time and Judgment: Enoch receives knowledge about the cosmic cycles, the measurement of time, and the final judgment of both angels and humans. These concepts relate to the divine plan for creation and the ultimate resolution of good and evil.

7. The End Times and Messianic Expectations: Enoch is believed to have received prophetic visions regarding the future, including the coming of the Messiah and the final judgment of the wicked. These eschatological teachings offer insights into the divine plan for humanity's redemption.

It's important to remember that the Book of Enoch is considered a work of religious literature and its metaphysical teachings are interpreted differently by various traditions and scholars. These concepts offer a glimpse into the unique cosmology and spiritual worldview present in the text.

* please note always do your own research. This is purely my opinion, and the interpretation I have crafted from my studies based on the original texts and mythologies.