The Church has a strong emphasis on the need to show evidence of glossolalia, known as 'speaking in tongues' to demonstrate the receiving the Holy Spirit to be considered a full member of the Church and a saved Christian. Revival Centres International bases its glossolalia teaching on a literalistic interpretation of Acts 2, a common trait with many Pentecostal Churches. However Revival Centres does not affiliate with any other religious organisation and are not a member of the World Council of Churches.