In my own words.

In the Bible, people are often categorized as either foolish or wise. Interestingly, God does not immediately condemn someone for being a fool (1 Corinthians 1:27). However, there is a more critical distinction made between those who are useful to God and those who are not. A fool can still be useful to God, many are. The real problem arises when a person, whether wise or foolish, becomes useless in the eyes of God (Matthew 25:30). What a great loss that truly is!