"In Abrahamic religions (Judaism, Christianity and Islam), Gabriel (/ˈɡeɪbriəl/ GAY-bree-əl)[N 2] is an archangel with power to announce God's will to men. He is mentioned in the Hebrew Bible, the New Testament, and the Quran."
https://en.wikipedia.org/wiki/Gabriel
"The Angel Gabriel Explains the Vision
15 I was trying to understand what the vision meant, when suddenly someone was standing in front of me. 16 I heard a voice call out over the Ulai River, “Gabriel, explain to him the meaning of what he saw.” 17 Gabriel came and stood beside me, and I was so terrified that I fell to the ground.
He said to me, “Mortal man, understand the meaning. The vision has to do with the end of the world.”"
https://www.biblegateway.com/passage/?search=Daniel%208:15-17&version=GNT
"The angel, Gabriel, gave Zechariah the incredible news that his wife, Elizabeth, would give birth to a son who would become a great preacher. They were to name the baby John."
https://missionbibleclass.org/new-testament/part1/life-of-christ-early/birth-of-john-the-baptist/
"The angel Gabriel is a messenger who was entrusted to deliver several important messages on God’s behalf. Gabriel appears to at least three people in the Bible: first to the prophet Daniel (Daniel 8:16); next to the priest Zechariah to foretell and announce the miraculous birth of John the Baptist (Luke 1:19); and finally to the virgin Mary to tell her that she would conceive and bear a son (Luke 1:26–38). Gabriel’s name means “God is great,” and, as the angel of the annunciation, he is the one who revealed that the Savior was to be called “Jesus” (Luke 1:31)."
https://www.gotquestions.org/angel-Gabriel.html
"Mandaeans (Arabic: المندائيون al-Mandāʾiyyūn), also known as Mandaean Sabians (الصابئة المندائيون al-Ṣābiʾa al-Mandāʾiyyūn) or simply as Sabians (الصابئة al-Ṣābiʾa),[b] are an ethnoreligious group who are followers of Mandaeism. They believe that John the Baptist was the final and most important prophet. They may have been among the earliest religious groups to practice baptism, as well as among the earliest adherents of Gnosticism, a belief system of which they are the last surviving representatives today"
https://en.wikipedia.org/wiki/Mandaeans
"the Mandaeans. Also called Sabians, they are followers of the last Gnostic religion to survive continuously from ancient times down to the present day.
Gnostic religions view the material world as the product of a mistake in the heavenly realm, the creation of one or more inferior divine beings rather than the supreme God. Gnosticism also emphasizes that human beings can become aware of this and prepare their souls to escape from under the influence of the malevolent spiritual forces that created and rule this realm, so that when they die they can ascend to the good realm that lies beyond them."
https://theconversation.com/this-tiny-minority-of-iraqis-follows-an-ancient-gnostic-religion-and-theres-a-chance-they-could-be-your-neighbors-too-160838
"The teaching of the savior, and the revelation of the mysteries and the things hidden in silence, things he taught his student John.
THE REVEALER APPEARS TO JOHN
One day when John the brother of James, the sons of Zebedee, went up to the temple, it happened that a Pharisee named Arimanios came up to him and said to him, Where is your teacher, whom you followed?
I said to him, He has returned to the place from which he came.
***The Pharisee said to me, This Nazarene has deceived you badly, filled your ears with lies, closed your minds, and turned you from the traditions of your parents***.
When I, John, heard this, I turned away from the temple and went to a mountainous and barren place. I was distressed within, and I said,
How was the savior selected?
Why was he sent into the world by his father?
Who is his father who sent him?
To what kind of eternal realm shall we go?
And what was he saying when he told us,
This eternal realm to which you will go is modeled
after the incorruptible realm,
but he did not teach us what kind of realm that one is?
At the moment I was thinking about this, look, the heavens opened, all creation under heaven lit up, and the world shook. I was afraid, and look, I saw within the light a child standing by me. As I was staring, it seemed to be an elderly person. Again it changed its appearance to be a youth. Not that there were several figures before me. Rather, there was a figure with several forms within the light. These forms appeared through each other, and the figure had three forms."
http://www.gnosis.org/naghamm/apocjn-meyer.html
"Their chief is blind. Because of his power and his ignorance and his arrogance he said, with his power, “I am god; there is no other but me.”
When he said this, he sinned against all. This speech rose up to incorruptibility. Then there was a voice that came forth from incorruptibility, saying, “You are wrong, Samael,” that is, god of the blind.
His thoughts became blind. And having expelled his power—that is, the blasphemy he had spoken—he pursued it down to chaos and the abyss, his mother, at the instigation of Pistis Sophia. She established each of his offspring in conformity with its power, after the pattern of the realms that are above, for by starting from the invisible world the visible world was invented."
"The great angel Eleleth, understanding, spoke to me: “Incorruptibility inhabits limitless realms. Sophia, who is called Pistis,wanted to create something, alone, without her partner, and what she created was celestial.
“A veil exists between the world above and the realms below, and shadow came into being beneath the veil. That shadow became matter, and that shadow was projected apart. And what she had created came to be in matter, like an aborted fetus. It assumed a shape molded out of shadow, and became an arrogant beast resembling a lion. It was androgynous, as I have already said, because it derived from matter.
“Opening his eyes he saw a vast quantity of endless matter, and he turned arrogant, saying, ‘I am god, and there is no one but me.’
“When he said this, he sinned against all. And a voice came from above the realm of absolute power, saying, ‘You are wrong, Samael,’ that is, god of the blind.
“And he said, ‘If any other thing exists before me, let it become visible to me!’ Immediately Sophia pointed her finger and introduced light into matter, and she pursued it down to the region of chaos. And she returned up to her light. Once again darkness returned to matter."
http://www.gnosis.org/naghamm/Hypostas-Barnstone.html
"Seeing that everybody, gods of the world and mankind, says that nothing existed prior to chaos, I, in distinction to them, shall demonstrate that they are all mistaken, because they are not acquainted with the origin of chaos, nor with its root. Here is the demonstration.
How well it suits all men, on the subject of chaos, to say that it is a kind of darkness! But in fact it comes from a shadow, which has been called by the name 'darkness'. And the shadow comes from a product that has existed since the beginning. It is, moreover, clear that it existed before chaos came into being, and that the latter is posterior to the first product. Let us therefore concern ourselves with the facts of the matter; and furthermore, with the first product, from which chaos was projected. And in this way the truth will be clearly demonstrated.
After the natural structure of the immortal beings had completely developed out of the infinite, a likeness then emanated from Pistis (Faith); it is called Sophia (Wisdom). It exercised volition and became a product resembling the primeval light. And immediately her will manifested itself as a likeness of heaven, having an unimaginable magnitude; it was between the immortal beings and those things that came into being after them, like [...]: she (Sophia) functioned as a veil dividing mankind from the things above."
http://www.gnosis.org/naghamm/origin.html