Encounters between Christians and Jehovah’s Witnesses typically revolve around a discussion of deity. The reason for this is twofold. First, this is the area where Watchtower theology deviates most dramatically from orthodox Christianity. In contrast to the Trinitarian concept of one God in three Persons—Father, Son, and Holy Spirit—the JWs have been taught to believe that God the Father alone is "Jehovah," the only true God; that Jesus Christ is Michael the archangel, the first angelic being created by God; and that the Holy Spirit is neither God nor a person, but rather God’s impersonal "active force."