John 3:9-10

John 3:9-10. Nicodemus answered and said unto him, How can these things be? Jesus answered and said unto him, Art thou a master of Israel, and knowest not these things?

A very similar query to that might be put to some who are living now "Are you profound philosophers, students deeply learned in classic lore, or wise concerning many of the mysteries of nature; yet know you not these things? What will be the good of all your knowledge if you do not know how to gain admission into the kingdom of heaven? It would be better for a man to be ignorant of all other things, and to know this one thing, than to have all possible human learning, and yet to miss this knowledge which is the most essential of all.