The church calendar in the Assemblies of God includes only some of the major events of the Christian year, but also designates numerous days for the promotion of denominational programs and recognizes national holidays and ecumenical observances. Congregations have considerable freedom in choosing which days to observe and how to observe them. Due in part to the influence of charismatics with backgrounds in the liturgical churches, some Assemblies of God pastors are beginning to incorporate more of the events of the traditional church year into worship.
Assemblies of God churches have always maintained a highly pragmatic approach in their use of music, always making use of a secularized and popular style of church music. In recent years this has extended to the inclusion of Christian music derived from rock music. They believe that matters of artistic style are secondary to moral purity or doctrine.
It is estimated that over half a billion people in over 100 nations are practicing Pentecostals.
Perhaps the best way to describe worship in the Assemblies of God would be to focus initially on the ideal of that event among believers and congregations. “Pentecostal” worship centers on the immanent work of the Holy Spirit within the worshiping community.