Proverbs 9:9-10

Amplified Bible

⁹ 
Give instruction to a wise man and he will become even wiser;
Teach a righteous man and he will increase his learning.
¹⁰ 
The [reverent] fear of the Lord [that is, worshiping Him and regarding Him as truly awesome] is the beginning and the preeminent part of wisdom [its starting point and its essence],
And the knowledge of the Holy One is understanding and spiritual insight.