a Christian context and predates the advent of Islam with 150 years.

http://www.ancient-origins.net/news-history-archaeology/archaeologists-discover-earliest-known-arabic-writing-was-penned-christian-020778

The
oldest known Arabic writing found in Saudi Arabia, from ca. 470 AD
belong to a Christian context and predates the advent of Islam with 150

years.
- See more at: http://www.ancient-origins.net/news-history-archaeology/archaeologists-discover-earliest-known-arabic-writing-was-penned-christian-020778#sthash.ZH0zSVM9.dpuf
21 March, 2016 - 23:51 Sam Bostrom
Archaeologists Discover that Earliest Known Arabic Writing Was Penned by a Christian
(Read the article on one page)