Muslims in foreign lands not exposed to Christianity will often convert due to visions. This has been reported by traveling Christian Apologists (using logic/reason to argue for a Creator and evidence supporting Jesus is the Messiah) like Ravi Zacharias and others. They give testimony on YT.
In Matthew 24:14, Jesus says: “And this gospel of the kingdom will be proclaimed throughout the whole world as a testimony to all nations, and then the end will come.”