The Bible makes it clear that we are involved in an epic battle (see Ephesians 6:10-17; 1 Peter 5:8-11). It’s spiritual in its roots, but many parts of it are carried out in the physical realm every single day. I love these two passages from some great thinkers about this spiritual battle we face each day…
“The doctrine of the Fall (both of man and of some ‘gods,’ ‘eldils’ or ‘angels’) is the only satisfactory explanation. Evil begins, in a universe where all was good, from free will, which was permitted because it makes possible the greatest good of all. The corruption of the first sinner consists not in choosing some evil thing (there are no evil things for him to choose) but in preferring a lesser good (himself) before a greater (God). The Fall is, in fact, Pride. The possibility of this wrong preference is inherent in the very fact of having, or being, a self at all. But though freedom is real it is not infinite. Every choice reduces a little one’s freedom to choose the next time. There therefore comes a time when the creature is fully built, irrevocably attached either to God or to itself. This irrevocableness is what we call Heaven or Hell. Every conscious agent is finally committed in the long run: i.e., it rises above freedom into willed, but henceforth unalterable, union with God, or else sinks below freedom into the black fire of self-imprisonment. That is why the universe (as even the physicists now admit) has a real history, a fifth act with a finale in which the good characters ‘live happily ever after’ and the bad ones are cast out. At least that is how I see it.” —C.S. Lewis (emphasis added)
“In the early days, when Christianity exercised a dominant influence over American thinking, men and women conceived the world to be a battleground. Our fathers believed in sin and the devil and hell as constituting one force, and they believed in God and righteousness and heaven as the other. By their very nature, these forces were opposed to each other forever in deep, grave, irreconcilable hostility. Humans, our fathers held, had to choose sides—they could not be neutral. For them it must be life or death, heaven or hell, and if they chose to come out on God’s side they could expect open war with God’s enemies. The fight would be real and deadly and would last as long as life continued here below. People looked forward to Heaven as a return from the wars, a laying down of the sword to enjoy in peace the home prepared for them….
“How different today. The fact remains the same, but the interpretation has changed completely. People think of the world, not as a battleground, but as a playground. We are not here to fight; we are here to frolic. We are not in a foreign land; we are at home. We are not getting ready to live, but we are already living, and the best we can do is rid ourselves of our inhibitions and our frustrations and live this life to the full.” —A.W. Tozer (emphasis added)