"They are more desirable than gold, even the finest gold. They are sweeter than honey, even honey dripping from the comb." Psalm 19:10
The human being has a void. He is missing something unknown. All of his dissatisfaction is in fact a hunger and a thirst for God. It's a hunger in his spirit but he doesn't know it. When the Word of God is revealed to him, he finds an inexhaustible treasure that grants him access to an infinite God. From that moment his heart rests in total reliance on Divine thoughts.
The Law of God restores the soul and gives joy to the spirit; it is for this reason that His teachings are sweeter than honey.