The phrase "brought in to fold" means to bring someone into a group or community, typically through persuasion or coercion. Antonyms for this phrase include "left out in the cold," which conveys the idea of excluding someone from a group or community. Other antonyms might include "cast out," "banished," or "ostracized," all of which denote the idea of expelling someone from a group or community. These antonyms suggest a sense of exclusion, isolation, or rejection, as opposed to the sense of inclusion that "brought in to fold" implies.