'Understand' in the Bible

What do you know that we don't know? What do you understand that we don't understand?

I would know with what words he would answer me, and understand what he would say to me.

Indeed, these are but the outer fringes of his ways! How faint is the whisper we hear of him! But who can understand the thunder of his power?"

But it is a spirit in people, the breath of the Almighty, that makes them understand.

It is not the aged who are wise, nor old men who understand what is right.

Who can understand the spreading of the clouds, the thunderings of his pavilion?