"raised him from among those who were dead." To be with "the dead" means that Jesus was dead.
# from the dead
From among all those who have died. This expression describes all dead people together in the underworld. To come back from among them speaks of becoming alive again.
This can be stated in active form. AT: "The disciples who traveled with Jesus from Galilee to Jerusalem saw him for many days" (See: [[rc://en/ta/man/translate/figs-activepassive]])
# many days
We know from other writings that this period was 40 days. Translate "many days" with a term that would be appropriate for that length of time.