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same spiritual reality the Christ-centered, Spirit-directed process of transformation of disciples
as whole persons into an ever-greater conformity to the likeness of Christ. And we have seen
that there is a mutually beneficial relationship between the spirituality of spiritual formation and
the theology of these models of sanctification. The views of Willard and Demarest fit most
closely into a broadly Reformed model. And within that tradition, we have seen significant
advances that have come from these evangelical examinations of spiritual formation. Clearly
those who preach, teach, and write on the theology of sanctification have much to learn and to
profit from Willard, Demarest, and the like. But the theological and spiritual benefit goes in the
other direction as well. Theological models of sanctification do address issues and topics that are
perhaps neglected in contemporary treatments of spiritual formation. Those who labor in the
field of spiritual formation will do well to stand on the shoulders of those who have thought
deeply on issues of sanctification. The point has been made, I trust. Spiritual formation and
sanctification need each other. Sanctification is not an old wineskin that must be discarded in
order to profit from the new wine of spiritual formation. Neither is spiritual formation a new and
weird departure from tried and true discussions of sanctification. No, both spiritual formation
and sanctification need one another. So, to quote the words of Jesus from another context, What
God has joined togther, let no one separate.