I grew up in France in the 60s and 70s when it was at least 80% Catholic. Almost every town and village had a church and a priest. The church bells would regularly punctuate our days, calling the faithful parishioners to services. This was the normal sound of everyday life even for a Jewish person.
Yet, it is never too late to share the Gospel of Messiah Yeshua (Jesus) with the lost, including the first victims of Islam, the Muslims themselves.