Firmament is a name for the sky or the heavens, generally used in the context of Christianity, Judaism and Islam. Christianity ( Greek Χριστιανισμός from the word Xριστός ( Christ)is a monotheistic Religion centered on the life and teachings Judaism (from the Greek Ioudaïsmos, derived from the Hebrew יהודה Yehudah, " Judah " in Hebrew יַהֲדוּת Yahedut For other meanings including people named 'Islam' see Islam (disambiguation. In the Hebrew Old Testament, the word used for "firmament" is "raqiya`" (pronounced rä·kē'·ah) meaning an extended solid surface or flat expanse, considered to be a hemisphere above the Earth. In Western Christianity, the Old Testament refers to the books that form the first of the two-part Christian Biblical canon. [1] The word is derived from the Hebrew raqa, meaning "to spread out" by stamping, stretching, beating, or making broad. [2], e. g. the process of making a metal bowl by hammering metal flat, or "to make a spreading (of clouds)". Thus, in the Bible, Elihu asks Job “Can you beat out [raqa] the vault of the skies, as he does, hard as a mirror of cast metal (Job 37:18)?” In the Vulgate, the word firmamentum is used, which in Classical Latin means a strengthening or support. The Vulgate is an early Fifth Century version of the Bible in Latin, and largely the result of the labours of Jerome, who was commissioned by Classical Latin is the form of the Latin language used by the ancient Romans in what is usually regarded as "classical" Latin literature. For Jewish and Christian astronomers familiar with Greek astronomy, the firmament was the eighth sphere carrying the fixed stars and surrounding the seven spheres of the planets in the geocentric model. Greek astronomy is the Astronomy of those who wrote in the Greek language in Classical antiquity. The celestial spheres or celestial orbs were the fundamental celestial entities of the cosmological celestial mechanics first invented by Eudoxus, and developed by Aristotle The fixed stars (from the Latin stellae fixae) are celestial objects that do not seem to move in relation to the other stars of the night sky In Astronomy, the naked-eye planets are the five Planets of our Solar system that can be discerned with the Naked eye without much difficulty In Astronomy, the geocentric model of the Universe is the superseded theory that the Earth is the center of the universe and other
The word is mentioned in the King James Bible, in the course of the creation story of (Genesis 1:6–8):
God said, "Let there be a firmament in the midst of the waters, and let it divide the waters from the waters. Creation according to Genesis refers to the Hebrew narrative of the creation of the heavens and the earth as told in chapters 1 and 2 of Genesis And God made the firmament, and divided the waters which were under the firmament from the waters which were above the firmament: and it was so. And God called the firmament Heaven. And the evening and the morning were the second day.
The Jewish Encyclopaedia describes the Firmament as follows:
The book of Genesis goes on to mention lights being placed in the firmament (Genesis 1:14-17):
And God said, "Let there be lights in the firmament of the heaven to divide the day from the night; and let them be for signs, and for seasons, and for days, and years: And let them be for lights in the firmament of the heaven to give light upon the earth": and it was so. And God made two great lights; the greater light to rule the day, and the lesser light to rule the night: the stars also.
The Sun and Moon were thought to move in and out of the Firmament dome through a series of openings (reflecting the apparent movement of their rising and setting points throughout the year). This is explained in considerable detail in the Book of Enoch (the following is an excerpt):
Biblical references to this cosmology (specifically, the notion of a solid Firmament with Heaven above it) include the creation of the Firmament in Genesis 1:6; God opening windows in the Firmament in Genesis 7:11 to let water rain down, and closing them again in Genesis 8:2; the construction of a tall tower to reach Heaven in Genesis 11:4; celestial warehouses for snow and hail in Job 38:22, the sky as a strong crystalline material in Job 37:18 and Ezekiel 1:22; the sky as a tent in Isaiah 40:22; stars as small objects attached to the Firmament (which can fall off) in Daniel 8:10, Matthew 24:29, Mark 13:25, Revelation 6:13, Revelation 8:10, Revelation 9:1 and Revelation 12:4 (it is sometimes claimed that these "falling stars" are meteors, but the swipe of a dragon's tail dislodges "one-third of all the stars in the sky" in Revelation 12:4).
The heavens are "rolled back like a scroll" in Revelation 6:14: however, as stars are apparently still being knocked off the Firmament in subsequent verses, it's unclear which layer is being removed at this point.
The Book of Baruch elaborates on the Tower of Babel story, with the builders reaching the Firmament and attempting to pierce it: