Missiology is the systematic study by sinful/forgiven human beings who are God's chosen mission agents (His people), of the Word of God, of their experiences in the world, and of the results of their work. Mission belongs to God the Father who created the world, sent His Son Jesus to redeem the world (the central mission message), and with the Son sends the Holy Spirit to apply that redemption through the means of grace. The Triune God is present in the Word, in the experience and in the result, and continually offers His people incentive and corrective. The continuing study of the Word, mission activity and reflection on that activity is missiology.