KNOWLEDGE: It’s a collection of information.it can be collected from books, google and other sources. The snake has no legs, the fish has no hair, the crab has no neck and the dog has no hair and a young man has no sense or knowledge, said one.
UNDERSTANDING: The intellect/ understanding does not come from the book; it comes from experience. Books don’t give you understanding but only knowledge. For example, in a war “destroying the enemies is knowledge, and if you use enemies as stepping stones, that is intelligence”. The intellect decides based on the current environment.
WISDOM: Wisdom is not a thing, nor is it a good concept. Wisdom is a person, and he is Jesus Christ. That is how the book of Proverbs describe wisdom (Proverbs 8:23). We don’t get wisdom by reading too much, or from universities. That's why we see educated idiots (Ex: The Doctors who smoke). Wisdom never us haughty. Wisdom does not come because wisdom teeth have sprouted. When you come into wisdom; knowledge and understanding will follow you. There is no wisdom in the intellect. There is no wisdom in knowledge.