This phrase identifies the Sadducees as being the group of Jews that say that no one would rise from the dead. It does not imply that some Sadducees believed that there is a resurrection and some did not. (See: [[rc://en/ta/man/translate/figs-distinguish]])
# if a man's brother dies, having a wife, and being childless
The Jews considered the first son born to a woman who married her dead husband's brother as if he were the son of the woman's first husband. This son inherited the property of his mother's first husband and carried on his name. (See: [[rc://en/ta/man/translate/figs-explicit]])