The fear of the LORD is the beginning of wisdom: and the knowledge of the holy is understanding. Proverbs 9:10
The great king has uttered in the spirit that all good things come from God; fear of the Lord is the beginning of wisdom. But how does man acquire the fear of God?
A man obtains the fear of God if he has the remembrance of his unavoidable death and of the eternal torments that await sinners; If he tests himself every evening as to how he has spent the day, and every morning as to how he has spent the night, and if he is not sharp in his relations with others. + St. Dorotheos, Soul-Profiting Teachings, 4