Meaning of Firmament in Genesis Creation Account

The Hebrew word רָקִיעַ ( raqia') is translated as "firmament" in the Genesis creation account, particularly in Genesis 1:6-8. This term appears in the Latin Vulgate as firmamentum, which implies a solid structure ^[1]. However, the Hebrew root of raqia' signifies "expansion," "stretching," or "expanse," rather than inherent solidity ^{[1, 2]}.

In Genesis 1:6, God commands, "Let there be a firmament in the midst of the waters, and let it separate the waters from the waters" [ESV]. The subsequent verse describes God making the firmament and dividing "the waters that were under the firmament from the waters that were above the firmament" [Genesis 1:7]. On the second day of creation, God names this firmament "Heaven" (Cælum in the Vulgate) ^[3].

Lexical analysis of raqia' suggests a wide extent or a stretched-out expanse ^[2]. Matthew Henry, a Nonconformist commentator, describes it as "an expansion... like a sheet spread, or a curtain drawn out," encompassing "all that is visible above the earth, between it and the third heavens: the air, its higher, middle, and lower, regions - the celestial globe, and all the spheres and orbs of light above" ^[5]. Similarly, John Gill, a Baptist/Reformed scholar, interprets raqia' as "something stretched out and spread like a curtain, tent, or canopy" ^[7]. The Jamieson, Fausset & Brown commentary, representing a Presbyterian view, defines it as "an expanse—a beating out as a plate of metal," referring to the atmosphere that appears as a vault supporting clouds ^[6].

The concept of the firmament as a separator of waters is central to its role in creation. It divides the atmospheric waters (clouds) from the terrestrial waters (oceans, rivers) ^{[6, 13]}. This division is understood as the creation of the atmosphere itself, allowing for the suspension of clouds and the formation of weather patterns ^[6]. While the Vulgate's firmamentum suggests a solid body, many interpretations emphasize the expansive nature of the Hebrew term, viewing it as the space where the atmosphere, clouds, and celestial bodies are located ^{[1, 2, 5]}.

Rabbinic tradition, as seen in the Babylonian Talmud, elaborates on the concept of multiple firmaments. Reish Lakish states there are seven firmaments, with Rakia being the one "in which the sun, moon, stars, and zodiac signs are fixed" ^{[8, 9, 10]}. Other firmaments, like Vilon, are described as a "curtain" that renews creation daily ^[8]. Nachmanides (Ramban), a Jewish Kabbalistic/Philosophical commentator, suggests that the substance created on the first day became the firmament on the second day, solidifying from a fluid state ^[11]. This aligns with a view that "Let there be a firmament" implies a strengthening or solidification of existing matter ^[11].

The term raqia' is distinct from other Hebrew words for "heaven," such as shamayim (used for "heaven and earth"), marom (meaning "mountain" but also used for heaven), and shechakim ("expanses") ^[4]. While raqia' specifically denotes the expanse created on the second day, it is later called "Heaven" by God ^{[3, 4]}. This "heaven" is understood to include the atmosphere and all its contents ^[12].

The biblical language concerning the firmament is often understood as popular rather than strictly scientific, describing phenomena as they appear to an observer ^[1]. Therefore, while the term "firmament" might suggest solidity, the underlying Hebrew emphasizes expansion and the creation of a vast, separating space in the cosmos ^{[1, 2]}.

Sources

Easton's Bible Dictionary “Easton's Bible Dictionary: Firmament — From the Vulgate firmamentum, which is used as the translation of the Hebrew raki'a. This word means simply "expansion." It denotes the space or expanse like an arch appearing immediately above us. They who rendered raki'a by firmamentum regarded it as a solid body. The language of Scripture is not scientific but popular, and hence we read of the sun rising and setting, and also here the use of this particular word. It is plain that it was used to denote solidity as well as expansion. It formed a division between the waters above and the waters below (Gen”
Smith's Bible Dictionary “Smith's Bible Dictionary: Firmament — In Scripture the word denotes an expanse, a wide extent; for such is the signification of the Hebrew word. The original, therefore, does not convey the sense of solidity, but of stretching, extension; the great arch of expanse over our heads, in which are placed the atmosphere and the clouds, and in which the stars appear to be placed, and are really seen.--Webster.”
Genesis “Vocavitque Deus firmamentum, Cælum : et factum est vespere et mane, dies secundus. -- Genesis 1:8”
Smith's Bible Dictionary “Smith's Bible Dictionary: Heaven — There are four Hebrew words thus rendered in the Old Testament which we may briefly notice. + Raki'a, Authorized Version, firmament. [[602]Firmament] + Shamayim . This is the word used in the expression "the heaven and the earth," or "the upper and lower regions." (Genesis 1:1) + Marom, used for heaven in (Psalms 18:16; Isaiah 24:18; Jeremiah 25:30). Properly speaking it means a mountain as in (Psalms 102:19; Ezekiel 17:23) + Shechakim, "expanses," with reference to the extent of heaven. (33:26; Job 35:5) St. Paul's expression "third heaven," (2 Corinthians 1”
Genesis (Nonconformist/Puritan) “Matthew Henry on Genesis 1:6: We have here an account of the second day's work, the creation of the firmament, in which observe, 1. The command of God concerning it: Let there be a firmament, an expansion, so the Hebrew word signifies, like a sheet spread, or a curtain drawn out. This includes all that is visible above the earth, between it and the third heavens: the air, its higher, middle, and lower, regions - the celestial globe, and all the spheres and orbs of light above: it reaches as high as the place where the stars are fixed, for that is called here the firmament of heaven (Gen 1:14, ”
Genesis (Presbyterian) “Jamieson, Fausset & Brown on Genesis 1:6: SECOND DAY. (Gen 1:6-8) firmament--an expanse--a beating out as a plate of metal: a name given to the atmosphere from its appearing to an observer to be the vault of heaven, supporting the weight of the watery clouds. By the creation of an atmosphere, the lighter parts of the waters which overspread the earth's surface were drawn up and suspended in the visible heavens, while the larger and heavier mass remained below. The air was thus "in the midst of the waters," that is, separated them; and this being the apparent use of it, is the only one mentio”
Genesis (Baptist/Reformed) “John Gill on Genesis 1:6: And God said, let there be a firmament in the midst of the waters,.... On which the Spirit of God was sitting and moving, Gen 1:2 part of which were formed into clouds, and drawn up into heaven by the force of the body of fire and light already produced; and the other part left on the earth, not yet gathered into one place, as afterwards: between these God ordered a "firmament to be", or an "expanse" (v); something stretched out and spread like a curtain, tent, or canopy: and to this all those passages of Scripture refer, which speak of the stretching out of the heave”
Babylonian Talmud (Jewish (Rabbinic)) “Babylonian Talmud, Chagigah 12b.5: Reish Lakish said: There are seven firmaments, and they are as follows: Vilon , Rakia , Sheḥakim , Zevul , Ma’on , Makhon , and Aravot . The Gemara proceeds to explain the role of each firmament: Vilon , curtain, is the firmament that does not contain anything, but enters at morning and departs in the evening, and renews the act of Creation daily, as it is stated: “Who stretches out the heavens as a curtain [ Vilon ], and spreads them out as a tent to dwell in” (Isaiah 40:22). Rakia , firmament, is the one in which the sun, moon, stars, and zodiac signs are f”
Babylonian Talmud (Jewish (Rabbinic)) “Babylonian Talmud, Chagigah 54a.24:5: Reish Lakish said: There are seven firmaments, and they are as follows: Vilon , Rakia , Sheḥakim , Zevul , Ma’on , Makhon , and Aravot . The Gemara proceeds to explain the role of each firmament: Vilon , curtain, is the firmament that does not contain anything, but enters at morning and departs in the evening, and renews the act of Creation daily, as it is stated: “Who stretches out the heavens as a curtain [ Vilon ], and spreads them out as a tent to dwell in” (Isaiah 40:22). Rakia , firmament, is the one in which the sun, moon, stars, and zodiac signs ar”
Babylonian Talmud (Jewish (Rabbinic)) “Babylonian Talmud, Chagigah 54b.24:5: Reish Lakish said: There are seven firmaments, and they are as follows: Vilon , Rakia , Sheḥakim , Zevul , Ma’on , Makhon , and Aravot . The Gemara proceeds to explain the role of each firmament: Vilon , curtain, is the firmament that does not contain anything, but enters at morning and departs in the evening, and renews the act of Creation daily, as it is stated: “Who stretches out the heavens as a curtain [ Vilon ], and spreads them out as a tent to dwell in” (Isaiah 40:22). Rakia , firmament, is the one in which the sun, moon, stars, and zodiac signs ar”
Sefaria (Jewish (Kabbalistic/Philosophical)) “Ramban (Nachmanides) on Genesis 1:6: LET THERE BE A FIRMAMENT. G-d now said that the substance which had come into being first — that which He created from nought — should be a firmament, stretched as a tent in the midst of the waters, separating between waters and waters. It is possible that this is what the Rabbis intended by their saying, 96 Bereshith Rabbah 4:1. “Rav said, ‘The heavens were in a fluid form on the first day, and on the second day they solidified.’ Rav thus said, ‘ Let there be a firmament means let the firmament become strong.’ Rabbi Yehudah the son of Rabbi Shimon said, ‘L”
Genesis (Presbyterian) “Jamieson, Fausset & Brown on Genesis 2 (introduction): THE NARRATIVE OF THE SIX DAYS' CREATION CONTINUED. The course of the narrative is improperly broken by the division of the chapter. (Gen 2:1) the heavens--the firmament or atmosphere. host--a multitude, a numerous array, usually connected in Scripture with heaven only, but here with the earth also, meaning all that they contain. were finished--brought to completion. No permanent change has ever since been made in the course of the world, no new species of animals been formed, no law of nature repealed or added to. They could have b”
Genesis (Baptist/Reformed) “John Gill on Genesis 1:7: And God made the firmament,.... By a word speaking, commanding it into being, producing it out of the chaos, and spreading it in that vast space between the heaven of heavens and our earth (z), And divided the waters which were under the firmament from the waters which were above the firmament; the lower part of it, the atmosphere above, which are the clouds full of water, from whence rain descends upon the earth; and which divided between them and those that were left on the earth, and so under it, not yet gathered into one place; as it now does between the clouds ”

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