This is personification. Jesus speaks of "the truth" as if it were a person. AT: "if you obey the truth, God will set you free" (See: [[rc://en/ta/man/translate/figs-personification]])
This remark appears in the form of a question to express the Jewish leaders' shock at what Jesus has said. AT: "We do not need to be set free!" (See: [[rc://en/ta/man/translate/figs-rquestion]])