8:9

They are all plain to him who understands,
And right to those who find knowledge.

20:6

Most men will proclaim each his own goodness,
But who can find a faithful man?

14:6

A scoffer seeks wisdom and does not find it,
But knowledge is easy to him who understands.

2:5

Then you will understand the fear of the LORD,
And find the knowledge of God.