Basically he means the coming of the Messiah which is funny because

Christians and Muslims believe the anti christ will show up pretending to be the Messiah and lead the Jews astray

Also

In a death that resembles that attributed to Isaiah in Lives of the Prophets, Muslim exegesis recounts that Isaiah was martyred by Israelites by being sawn in two

There’s so much religious irony in this statement, I’m sure anyone could find more examples of comedy lol