Fascinatingly enough, Coptic is the ancient Egyptian language, the tongue of the Pharaohs spoken before the Arab/Muslim conquest. It's no longer a living language, but it's still in use in Egypt as the liturgical language in Coptic Christian churches. So, many people are still able to read and understand it. (It is no longer written with hieroglyphics.)

As an aside, Jesus's native tongue, Aramaic, is still a living language (though, of course it has changed in 2000 years) in Iraq, Syria, and other isolated parts of the Levant, where it is spoken by Chaldean Christian communities. My business partners in Detroit were Chaldean – Iraqi immigrants who spoke Arabic, English, and Chaldean. Chaldean sounds distinctly different from either Arabic or Hebrew, even though the three languages share a family relationship.