Have you ever wondered why God’s sanctifying power has not been more significant in your life? Have you been a Christian for a long time and been frustrated by your lack of moral improvement? I know I sure sometimes am. One way in which I have found it helpful over the years to think of the indwelling work of God has been to envision God as changing me from within, based on the room that I give Him to bring about that change. As a Christian philosopher, I believe that humans have the power of free will. God has given us the power to control the extent to which He transforms our lives. Whenever we are receptive to His transforming power, He more easily shapes our dispositions. But whenever we are unreceptive, He does not impose himself upon us in a way that would undermine our freedoms. God chooses not to control us, and as such we do have some power over our sanctification.
It has been helpful for me to think of the input materials in my life – the information and experiences that I am absorbing – as being the materials with which God works. When I feed my mind profitable and uplifting materials, God can more easily transform my character. But when I feed my mind garbage, God has fewer resources with which to transform me. Profitable things go in, and profitable character change results. But if garbage goes in, then garbage is what will come out.
The same principle works on the positive side as well. When I meditate on the Scriptures and on other uplifting things, I am giving God the materials He needs to improve my character. This lesson – learning to make one’s life inputs uplifting and profitable – has been essential to my success as a Christian. Cutting out dangerous or depressing inputs and adding profitable ones has made my life happier and more successful than it would otherwise be.