What does it mean to know God...?

From Casting Crown's latest CD:

Verse 1
To know you is never worry for my life, and
To know you is to never to give in or compromise
To know you is to want to tell the world about you
Cause I can't live without you

Verse 2
To know you is to hear your voice when you are calling
To know you is to catch my brother when he is falling
To know you is to feel the pain of the broken hearted
Cause they can't live with out you.

Chorus
More than my next breath
More than life or death
All reaching for, I live my life to know you more
I leave it all behind, you are all that satisfies
To know you is to want to know you more
To know you is to want to know you more

Verse 3
To know you is to ache for more than ordinary
To know you is to look beyond the temporary
To know you is believing that you will be enough
Cause there is no life without you

Bridge
All this life could offer me, could not compare to you
Compare to you
And I count it all as lost, compared to knowing you
Knowing you

Hmm... Want to sing this sometime when WL =P