How much thought have you given to setting your mind on heaven so that your life on earth is lived to the fullest? Our effectiveness for Christ in this world is tied to how much we tune our minds into the things of heaven. CS Lewis once wrote: “If you read history, you will find that the Christians who did most for the present world are those who thought most of the next. It is precisely because Christians have ceased to think of the other world that they have become so ineffective in this.” In this sermon, we learn that the philosophy for right earthly living is to look up to heaven. Three practices help us to achieve this: we must constantly purge our lives of sinful behavior, we must consistently renew ourselves with the knowledge of Christ through His word, and we must view other believers as unified with us in Christ.