Hebrew is not older than Arabic.
Arabic and Hebrew are equally old. They are both continua of Proto-Semitic, the common ancestor of all Semitic languages. The only difference is that Hebrew is attested earlier than Arabic in writing. A language exists independently of whether or not it was written down, so Arabic existed one way or another.
I see claims such as "Arabic is Modern compared to Biblical Hebrew"
It's not.
Look up how Proto-Semitic conjugates the verb kataba, then in Arabic. Across ~ 6,000 years, Classical Arabic has almost the exact same conjugations as its Proto-Semitic ancestor. Does that made Arabic any less than 2,000 to 3,000 years old, better yet, 4,000?
u/Classic_Mastodon_430 — 1 day ago