Azusa participants returned to their homes carrying their new experience with them. In many cases, whole churches were converted to the Pentecostal faith, but many times Pentecostals were forced to establish new religious communities when their experience was rejected by the established churches. One of the first areas of involvement was the African continent, where, by 1907, American missionaries were established in Liberia, as well as in South Africa by 1908. Because speaking in tongues was initially believed to always be actual foreign languages, it was believed that missionaries would no longer have to learn the languages of the peoples they evangelized because the Holy Spirit would provide whatever foreign language was required. (When the majority of missionaries, to their disappointment, learned that tongues speech was unintelligible on the mission field, Pentecostal leaders were forced to modify their understanding of tongues.) Thus, as the experience of speaking in tongues spread, a sense of the immediacy of Christ's return took hold and that energy would be directed into missionary and evangelistic activity. Early Pentecostals saw themselves as outsiders from mainstream society, dedicated solely to preparing the way for Christ's return.