> Copts do also maintain a significant amount of syncretism with ancient Egyptian religion as well, both within language (typically, Egyptian Arabic words that are “odd” to middle eastern speakers are pulled from Coptic or earlier stages of Egyptian)
This is true and also many of the characters in the language are believed to be derived from hieroglyphs.
This is true insofar as all Western writing systems are ultimately descended from Egyptian Hieroglyphics, via the Phoenician script. In the case of Coptic most of the letters are rather transparently borrowed from Greek.
Of course, Coptic is unusual in having added seven letters to the Greek alphabet for sounds not in Greek (Ϣ, Ϥ, Ϧ, Ϩ, Ϫ, Ϭ, Ϯ), and these were taken directly from the indigenous Egyptian writing system of the time, namely Demotic, itself a direct descendant of the Hieroglyphic script: https://en.wikipedia.org/wiki/Coptic_script#Letters_derived_....
Offering a perspective as an ethnic Copt, it is notable that most of the charms, “spells”, whatever you would call them, shown here, would be considered heretical today by Copts, though with the exception of basic crosses and icons and inscriptions limited to that of protection. The love spells and and such are in many a cautionary tale told to kids growing up to avoid at risk of invoking evil, so to say. Most of those stories come from the period where the “old religion” and Christianity were in flux.
Copts do also maintain a significant amount of syncretism with ancient Egyptian religion as well, both within language (typically, Egyptian Arabic words that are “odd” to middle eastern speakers are pulled from Coptic or earlier stages of Egyptian), and within ceremony (musical scales that do not sound “middle eastern” and are derivations of older Egyptian ceremony), and a belief that the Ankh, Hathor and Horus, etc. were precursors to modern Coptic religion.