God is a missionary God
Mission is not primarily an activity of the church, but an attribute of God. God is a missionary God. It is not the church that has a mission of salvation to fulfill in the world; it is the mission of the Son and the Spirit through the Father that includes the church. There is church because there is mission, not vice versa.—Jürgen Moltmann
The Church must not think its role is identical to the missio Dei [mission of God]; the Church is participating in the mission of God. The Church's mission is a subset of a larger whole mission. That is, it is part of God's mission to the world and not the entirety of God's work in the world.