Spiritual formation is the process of being conformed to the image of Christ by the gracious working of God's spirit, for the transformation of the world.

Robert Mulholland. Invitation to a Journey (InterVarsity Press, 1993).

Spiritual formation is the process by which God forms us into the persons we are meant to be, Christ like persons. Being re shaped according to the pattern of Jesus mind, heart, and work is the gracious labor of the Holy Spirit, moving within us personally and among us as Christian community. This transforming work takes us into ourselves and carries us out toward others in an endless, mutually reinforcing spiral of growth.