From it grew many new Pentecostal churches as people visited the services in Los Angeles and took their newfound beliefs to communities around the United States and abroad. During the 20th century, glossolalia became an important part of the identity of these religious groups. During the 1960s, the charismatic movement within the mainline Protestant churches and among charismatic Roman Catholics adopted some Pentecostal beliefs, and the practice of glossolalia spread to other Christian denominations.