just to clarify what you said, Hebrew and Arabic languages have a common ancestor, but also Hebrew and Arabic writing also have a common answer. It's something

just to clarify what you said, Hebrew and Arabic languages have a common ancestor, but also Hebrew and Arabic writing also have a common answer. It's something of a rule of thumb that languages are spoken (most people for most of history were fluent and illiterate) and languages are not writing systems, although for many extinct languages the writing is all we have to go on.