The Foursquare Church exists to glorify God and advance His kingdom. Jesus Christ's command is to preach the gospel and make disciples of all nations (Mark 16:15; Matthew 28:19). Therefore, they are "Dedicated unto the cause of inter-denominational and worldwide evangelism." These words express their spirit and their focus.

Their call is to preach Jesus Christ, God's Son, as the Savior, Healer, Baptizer with the Holy Spirit and coming King. Their assignment is to develop healthy, growing churches. Their commitment is to plant national churches around the world led by loving servants of Jesus Christ. Churches developed in this manner will reproduce again and again. This makes possible the spread of the gospel to those who have not heard or accepted the message of God's Son.