I can still see the dozens of wooden plaques in my school friend's kitchen. The one I especially recall announced, "Opportunity only knocks once, but temptation keeps on banging."
While I would heartily disagree that opportunity is so limited, temptation can certainly seem persistent. Temptation comes in all sizes and guises. Supposing an existence outside divine law, it claims that we are essentially cut off from good, God, and that we must find satisfaction through some materialistic, often immoral means. It promises instant satisfaction, unlimited excitement, unearned success. But the supposed benefit is illusory. Reliance on material means to obtain good dooms it.
By proclaiming a power and a presence apart from God, temptation would have us break the First Commandment and then trample on the other nine! Mrs. Eddy writes in the Christian Science textbook: "The foundation of evil is laid on a belief in something besides God. This belief tends to support two opposite powers, instead of urging the claims of Truth alone." Science and Health, p. 92.