5 Then shalt thou understand the fear of the LORD, and find the knowledge of God.
[AD 253] Origen of Alexandria on Proverbs 2:5
Solomon says, “You will find a divine sense.” For he knew that there were in us two kinds of senses, the one being mortal, corruptible and human, and the other immortal and intellectual, which here he calls “divine.” By this divine sense, therefore, not of the eyes but of a pure heart, that is, the mind, God can be seen by those who are worthy.

[AD 399] Evagrius Ponticus on Proverbs 2:5
Wisdom and understanding must precede, in order for the fear of God to coexist along with them.

[AD 735] Bede on Proverbs 2:5
Then you will understand the fear of the Lord, etc. If you seek with a careful heart, you will come to the experience of the loving fear of the Lord, which is not only the beginning but the perfection of heavenly wisdom in this life alone. And thus perfect love does not cast it out (I John IV), but makes it endure forever. And you will find the knowledge of his divinity, which makes perpetually blessed.