The Return of Jesus

What really happened to Jesus did he die, was he crucified, who was put on the cross? When will Jesus Return and what will be his mission? Why did Allah (God) raise Jesus up? What will Jesus look like, where and when will he descend? Who will Jesus follow when he returns? Who and what is the dajjal (antichrist)? What will the dajjal (antichrist) look like and where and when will he appear? Who will kill the dajjal (antichrist) and what will happen after he is killed? Who are the yajooj and majooj (gog and magog)? Will Jesus Die in the end? Why is it important to know these major signs of the hour?