Here "son" means he is the literal son of a Pharisee and also the descendant of Pharisees. Alternate translation: "and my father and forefathers were Pharisees"
The word "resurrection" can be stated as "come back to life." The word "dead" can be stated as "those who have died." Alternate translation: "that those who have died will come back to life" (See: [[rc://en/ta/man/translate/figs-abstractnouns]] and [[rc://en/ta/man/translate/figs-nominaladj]])