Not the spirit, he died, yes, he and efreet mutually assured destruction, but after his death, his soul did not go to the place where ordinary people go, but went to the creator Elovita. Because Saruman defected, Elovita made him the new Lord of the Five Witches, that is, the white wizard, and returned his soul to his original body (as for whether the original body fell into magma or gave it an identical body) Strictly speaking, he didn't die, because his soul didn't enter the grave, but went to see the creator, which is equivalent to people dying before Pangu, and didn't see the impermanence of black and white, so Gandalf was blessed by God, so he didn't die. People like him can't die basically, so Iruvita should let him live forever. What you adopted is not clear, because the body is not made, it is the original one. He was resurrected because of Saruman's rebellion, and the Lord of the Five Witches changed his nature. He killed the second god of the same rank, and because he was resurrected for the sake of world balance, Soren will be completely defeated one day and Gandalf will live forever, so this choice is almost unnecessary. The fiend behind Sauron should also be defeated by Gandalf.