Egyptian Cosmology 5
The basic outline of Egyptian cosmology (2500BC) and its cross-cultural name rescripts: Hinduism (800BC) and Judaism (300BC), as tabulated in god character rescripts, which shows that the mythical figures of Saraswati (Hindu) and Sarah (Judaism) were not real entities by star motif figures.
In religio-mythology, Sarah and Saraswati, aka the “wife/sister motif” (Greenberg, 1996), which is related to Abraham and Brahma, refers to []

Overview
In c.3,500BC to 500AD, in Egypt, prior to the completion of the Aswan High Dam (1970) of the Nile River, it was universal belief, in an astro-theological sense, held by Egyptians, Greeks, and Romans, and that the Jan 25 heliacal rising (Ѻ) of the the star Sirius, which had previously not been seen for 70-days, signaled or initiated the annual 150-day Nile River flood and worked to "re-kindle" the power or heat of the sun; the following is one take on this:

“Who is there that does not know that the vapor of the sun is kindled by the [Jun 25] rising of the dog-star [Sirius]? The most powerful effects are felt on the earth from this star. When it rises, the seas are troubled, the wines in our cellars ferment, and stagnant waters [Nile River] are set in motion [150-day flood].”
Pliny the elder (77AD), “On the Rising of the Dog Star” [4]

In this model, the "sun" and the star "Sirius" were believed to be a god and and goddess "married" to each other, so to say, in a reoccurring astro-theological relationship, generally modeled to the effect that the sun or sun god (Ra, predominately) was born out of the primordial waters (the water god Nun, Nile River, or Milky Way, depending); hence, the sun, the star, and a river were the three "physical" things behind the myths derived therefrom.

In 2333BC, as found in the Pyramid Texts of Pharaoh Teti, the Orion constellation, and his annual rising, is mentioned with two “important stars”, as Wallis Budge (1904) describes things, Sirius and another "unnamed star", which is thought to be associated with the goddess Nephthys, he sister of Isis: [6]

#Post-sync god
Pre-sync god
Star / Constellation
Budge listing


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1.OsirisSahOrionSah (Budge, 1904)
2.IsisSeptetSirius [Dog Star]Septet (Budge stars)
3.Set [?]SehutGreat BearSehut (Budge, 1904)
4Nephthys [?]NekhekhStar Name [?]Nekhekh

Ra, Isis, Nut
Left: a depiction of Ra-Khepri, the "morning" sun (see: sun god) riding with Isis. Right: Ra, as the noon sun, shown below Nut, his grand-daughter, the goddess of the heavens, who is the mother of Osiris. It is the Isis + Ra pairing (or Isis + Osiris-Ra pairing) that is behind the Brahma + Saraswati and Abraham + Sarah motifs.
In this period, i.e. during the old kingdom (2700-2200BC), the supreme god was Atum-Ra or “Ra” in short, depending, during which time Ra was said to have rode on his solar barque with two sister-mothers; one take on this is as follows:

“lusa, the Jesus of On, like Horus in the Osirian cult, was born bi-mater. His two mothers were Iusaas and Neb-hetep, the two consorts of Atum-Ra. These two mothers were at first two sisters in the mythos. One of them was the mother in the western mountain, or later in the winter solstice; the other gave birth to Horus on the horizon in the eastern equinox. It follows inevitably that the ‘Gospel Jesus’ has two mothers who were sisters, and two places of birth and rebirth. When the mythology was merged in the eschatology, and Ra became the father in heaven, he is described as having two companions who are with him in the solar bark. In this text the two sister-mothers with whom Ra consorts in the "divine ship" are Isis and Nut, who are the bringers-forth of lusa or Jesus in his twofold character: child-Horus at his first advent being the son of Isis (Har-si-Hesi) the earth-mother, and In his second advent, or rebirth in spirit, the son of Nut, the heavenly mother. Such is the origin of the two mothers who were two sisters.”
Gerald Massey (1907), Ancient Egypt, the Light of the Modern World, Volume Two (pg. 787)

Here, we glimpse the roots of the connection between Ra (the sun), the root god of Abraham and Brahma, and “sister-mother” connection with Isis (the star Sirius), and Nut, the mother of Isis and granddaughter of Atum-Ra, according to Heliopolis creation myth.

In 1250-1050 BCM, in the mid to late New Kingdom era, the syncretistic god Osiris-Ra became the new supreme god of Egypt (see: supreme god timeline), during which time Isis (the star Sirius) was the wife-sister of Osiris, and hence, in a reformulated sense, could be seen as the wife-sister of Osiris-Ra or Ra, in a reduced sense, which thus, in the Ra + Isis pairing, become the root behind the wife-sister motif seen in Hindu rescript (c.800BC) of Braham + Saraswati pairing and the Judaic rescript (c.300BC) of the Abraham + Sarah pairing.

In c.1560, scholars had come see and to point out that Sarah and Saraswati had the same religious story motif:

“But long before Georgi [1762], the English Orientalist Hyde [c.1700] (Ѻ), and long before Hyde, Postel (1552) (Ѻ) had declared the name of Brahma to be a corruption of Abraham—a view which appears to have been common among Mohammedans; and Catholic missionaries early expounded this discovery amongst the Hindus, adding that the name of the female deity Saraswati was only a corruption of Sarah.”
— John Robertson (1889), Christ and Krishna (pg. 6) [2]

To remedy this apparent inconsistence, Hindu apologists argued that the Jews were of Hindu origin and Christian apologists argued that the Hindu’s copied Old Testament when they wrote the Vedas. It wasn’t until the translation of the Rosetta Stone (1820s), however, that scholars began to see the true Egyptian origin to both stories.

In 1996, Gary Greenberg, in his “The Wife / Sister Stories” section, of his The Bible Myth: the African Origin of the Jewish People, connects the three “wife/sister” stories in the Old Testament, two involving Abraham and Sarah, and one involving Isaac and his wife, with the two Horus genealogies of the Egyptians. [1]

Hagar | Hagar river?
In the 2000s, scholars were beginning to point out that overlapping similarity that, in Judaism, Sarah had a handmaiden named “Hagar”, and that, in Hinduism and in India, the Sarasvati River (Ѻ) has a tributary named “Ghaggar” river (Ѻ):

“In Hindu mythology, Sarai-Svati is Brahm's sister. The bible gives two stories of Abraham. In this first version, Abraham told Pharaoh that he was lying when he introduced Sarai as his sister. In the second version, he also told the king of Gerar that Sarai was really his sister. However, when the king scolded him for lying, Abraham said that Sarai was in reality both his wife and his sister! (Genesis 20:12.). But the anomalies don't end here. In India, a tributary of the river Saraisvati is Ghaggar. Another tributary of the same river is Hakra. According to Jewish traditions, Hagar was Sarai's maidservant; the Moslems say she was an Egyptian princess. Notice the similarities of Ghaggar, Hakra and Hagar.”
— Gene Matlock (2002), “Who Was Abraham?” [5]

“We note that the name of Brahma's consort Sarasvati seems to resonate with that of Abraham's wife, Sarah. Also, in India, the Sarasvati River (Ѻ) includes a tributary known as the Ghaggar (Ѻ). Another tributary of the same river is called the Hakra. According to Jewish tradition, Hagar was Sarah's maidservant.”
Steven Rosen (2006), Essential Hinduism (pg. 12)

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Sarah and Saraswati (labeled)
An indexed section of names “Sarah” and “Saraswati”, from Donald Mackenzie’s Mythology of the Babylonian People (1915), showing the similarities between Abraham’s wife (Sarai / Sarah) and Brahma’s wife (Saraswati), albeit addressed on separate pages, annotated to show the prefix Sa- (or S-r-i common to both names) means “Sirius” and Ras- (or -Ra- common to both names) means “Ra” the sun or sun god, in the original Egyptian astro-theological meaning of each name component. [3]

Quotes
The following are related quotes:

“Have you ever noticed that Abraham and his wife Sarah of the monotheistic Judeo-Christian and Muslim religions are nearly identical in name to Brahma and his wife Saraswati of the Hindu religion?
— Rainbow Warrior (2014), “Brahma and Abraham” (Ѻ)(Ѻ)

References
1. Greenberg, Gary. (1996). The Bible Myth: the African Origins of the Jewish People (formerly published as The Moses Mystery) (§: The Wife / Sister Stories, pgs. 209-13). Citadel Press.
2. (a) Georgi, Antonio. (1762). Alphabetum Tibetanum: the Beginning of Tibetology in the Western World (abs). Publisher.
(b) Robertson, John. (1889), Christ and Krishna (pg. 6). Publisher.
3. Mackenzie, Donald. (1915). Mythology of the Babylonian People. (pg. 528). Bracken Books.
4. Pliny (the Elder). (77AD). Natural History, Volume 1 (translators: John Bostock and H.T. Riley) (pg. 67). Henry G. Bohn, 1855.
5. Matlock, Gene D. (2002). “Who Was Abraham?” (Ѻ) (§: Abraham = Braham; Sarah = Saraswati). Publisher.
6. Budge, Wallis. (1904). The Gods of the Egyptians, Volume One (important stars, pg. 83; Apollo, pg. 486; Horus son of Ra or son of Osiris, depending on text, pg. 487; seven scorpions, pgs. 487-88). Dover, 1969.

Further reading
● Karadja, Mary. (1912). King Solomon (pgs. 130-31). Publisher.
● Choudhury, Anjali. (2018). “Why Did Brahma Marry His Own Daughter Saraswati?” (Ѻ), The Humor Nation, Aug 13.

External links
Hinduism and Judaism – Wikipedia.
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