Definition: The word "aphelin" means a living creature that can't be harmed by chemicals or diseases, typically to protect themselves from being contaminated or infected with harmful organisms. Aphelin is mentioned in the Bible, specifically in Job 24:3 where it's used as an expression for those who cannot withstand harm. It describes something that has a "sharpness" unlike any other material. The word is also found in other places like John 10:9-11 where it means someone who "cannot be moved by the power of sin." In summary, "aphelin" is a metaphor for those who can resist harm and resist disease.