Now, I suppose that in my text the word 'mind' is not so much employed in the widest sense, including all the affections and will, and the other faculties of our nature, as in the narrower sense of the perceptive power, or that faculty in our nature by which we recognise, and make our own, certain truths. 'The renewing of the mind,' then, is only, in such an interpretation, a theological way of putting the simpler English thought, a change of estimates, a new set of views; or if that word be too shallow, as indeed it is, a new set of convictions. It is profoundly true that 'As a man thinketh, so is he.' Our characters are largely made by our estimates of what is good or bad, desirable or undesirable. And what the Apostle is thinking about here is, as I take it, principally how the body of Christian truth, if it effects a lodgment in, not merely the brain of a man, but his whole nature, will modify and alter it all. Why, we all know how often a whole life has been revolutionised by the sudden dawning or rising in its sky, of some starry new truth, formerly hidden and undreamed of. And if we should translate the somewhat archaic phraseology of our text into the plainest of modern English, it just comes to this: If you want to change your characters, and God knows they all need it, change the deep convictions of your mind; and get hold, as living realities, of the great truths of Christ's Gospel. If you and I really believed what we say we believe, that Jesus Christ has died for us, and lives for us, and is ready to pour out upon us the gift of His Divine Spirit, and wills that we should be like Him, and holds out to us the great and wonderful hopes and prospects of an absolutely eternal life of supreme and serene blessedness at His right hand, should we be, could we be, the sort of people that most of us are? It is not the much that you say you believe that shapes your character; it is the little that you habitually realise. Truth professed has no transforming power; truth received and fed upon can revolutionise a man's whole character.