Wastholm.com

Thus in every land where Christianity spread the slain and resurrected god, and the dramatic annual celebration of his death and resurrection, were quite familiar. It was Tammuz all over the plains of Mesopotamia, from Ur of the Chaldees to Jerusalem. It was Attis all over the region to the north and northwest of Palestine and through the old Phoenician civilization on the coast of Palestine and Asia Minor. It was Adonis in Greece, then in Rome, and gradually all over the Greco-Roman world.

...

"I am the Resurrection and the Life" is merely an epitome of what the Egyptians chanted for ages about their great god Osiris, the judge of the dead, one of the oldest and most revered gods of Egypt. He had been slain by "the powers of darkness" embodied in his wicked brother, Set. His sister and wife, Isis, had sought the fragments of his body and put them together again. And he had arisen from the dead, and was enthroned in the world of souls, to judge every man according to his works.