The Apostle Paul said, “Therefore we do not lose heart. Even though our outward man is perishing, yet the inward man is being renewed day by day. For our light affliction, which is but for a moment, is working for us a far more exceeding and eternal weight of glory, while we do not look at the things which are seen, but at the things which are not seen. For the things which are seen are temporary, but the things which are not seen are eternal.” 2 Corinthians 4: 16-18. The Apostle Paul in these verses was interpreting the most profound realities of the life of a saint, saint meaning, someone who is separated for God's service. We, the children of God should live our lives in the midst of joy, peace, and fulfillment, which is a life in alignment with God, and we shouldn’t pay so much attention to the exterior life, to the world, which is full of the things that the Apostle Paul mentions in this passage. We know that Paul’s life was one that started so terribly different and contrary to what it should have been, but later on he synchronized his thinking with the Lord’s, and we see what happened. What a hope for us! When Paul said "Don’t lose heart" he meant don’t cowardly surrender, because although the outward man is deteriorating, the inward man is being renewed day by day.
Our attention should be on the inward, on what is invisible to the physical senses, our spiritual life. Let our attention be there because what we focus on grows. We know that the physical body eventually dies, but the spirit which God created, is eternal. Sometimes we act in the opposite way, paying full attention to the physical body, trying to keep it comfortable and attractive, which uses our finances and our time. We are trying to serve two masters who are giving us contradictory orders. The Bible says that we will have adversity, but our time here is ephemeral, and the adversity we will face is nothing in comparison to the glory which we will experience by His side. The time will come when we won’t feel so good physically. Let’s not think in terms of, "maybe it's time to give up, I don’t have the energy I used to, I cannot do anything else for God" because the Bible says that even though the external becomes weak, internally we are stronger every day.
The recommendation is not to put our attention on the physical world, because it will perish, but to use our time to develop our spiritual life, the part that is eternal, that part that gains strength, as we become closer to God. We know in advance that our physical body will have an end, but our soul, invisible to the physical senses, that part that God is in charge of, continues to live. Because God gave us this life and we share it with Him. What comes from God is immutable. Life has no opposite because it is of God, and in Him there is no duality. He has no opposites, so death is not the opposite of life, but only the illusion of an end. When the day comes that our physical strength begins to decrease, we will accept as natural, remembering, “If we live, we live for the Lord; and if we die, we die for the Lord. So, whether we live or die, we belong to the Lord.” Romans 14: 8 And it is His presence which gives us the strength every day to complete our journey with the satisfaction of having lived our life to the fullest sustained by His power.
What would be the benefit of being here if we uses our time to give the body what the body craves? That would be to live by our impulses without a struggle of any kind, doing only what feels pleasurable at the time, but in the end realizing what we have done and feeling guilty about it. This is completely the opposite of what God intended for each of us. In Him there is no room for guilt, because the price of our guilt has already been satisfied. But we need to accept this fact and live with God in harmony. “God creates only mind awake. He does not sleep, and His creations cannot share what He gives not, nor make conditions which He does not share with them. The thought of death is not the opposite to thoughts of life. Forever unopposed by opposites of any kind, the Thoughts of God remain forever changeless, with the power to extend forever changelessly, but yet within themselves, for they are everywhere.” ACIM L.167.8
"The grace of the Lord Jesus Christ, and the love of God, and the fellowship of the Holy Spirit, be with you all."
2 Corinthians 13:14