The Astronomical Book
The Heavenly Luminaries, Sacred Calendar & End-Times Signs
Overview
The oldest section of 1 Enoch (possibly 4th-3rd century BC), preserved in Aramaic fragments at Qumran. The angel Uriel shows Enoch the laws governing the sun, moon, stars, winds, and seasons. It describes a 364-day solar calendar (as opposed to the lunar calendar used in Jerusalem) and predicts that at the end of the age, the luminaries will deviate from their courses — a sign of cosmic judgment. This section is foundational for understanding the Essene calendar controversy and why the Qumran community rejected the Jerusalem Temple calendar.
Theological Significance
The Astronomical Book establishes the theological principle that the heavens declare God's order and that deviation from that order signals judgment. Jesus' signs of the end in Luke 21:25 ("signs in the sun, moon and stars") and the cosmic disturbances in Revelation 6:12-14 and 8:7-12 draw from this tradition. The 364-day calendar also explains why the Essenes celebrated Passover on a different day than the Jerusalem Temple — and raises the question of whether Jesus' Last Supper was on the Essene calendar date.
Canon Status
Aramaic fragments found at Qumran (4Q208-4Q211). Canonical in the Ethiopian Orthodox Church. Not in Protestant or Catholic canons.
Date Composed
4th-3rd century BC (oldest section of 1 Enoch)
Language: Aramaic/Hebrew original; preserved in Ge'ez (Ethiopic)