It seems an obscure historic trivia - or was more before THAT Mel Gibson movie - but the Christ and many hebrews lost the old language apparently or spoke it only as a litturgic language anymore by His era. Aramean - another semitic language, (and perhaps already some dialects and varieties) was the living, day to day language of many of them, and neighbors perhaps too, it seemed. A famous version of the Bible, the Peshita, was wrote into it.
The language(s) did survive (and evolve), but the rise of Islam ended overtaking it in time (along other languages found around as Greek), and it is a language confined to some christian minorities nowaday.
(Or so I seem to have understood.)
Hence so... Another random dare. Your mission so is to keep Aramean (or a variety, or 'Neoaramean') not only alive, but thriving, a major language of the area. Bonus if THE language, Bonus if it spread more.
At start, I guess no Islam would help MAJORLY, but... maybe something else would come; because If no Islam, maybe Byzance would rebound one day, and try to expend, and so...