FACE to FACE with God

What does it mean to see God face of face?
Is it the same as seeing God?

John 1:18 (NIV)
No one has ever seen God, but God the One and Only (JESUS), who is at the Father's (God's) side, has made Him known.

John 1:18 (NKJ)
No one has seen God at any time. The only begotten Son, who is in the bosom of the Father, He has declared Him.

John 6:46
No one has seen the Father except the one who is from God; only he has seen the Father.

Exodus 33:11
The LORD would speak to Moses FACE to FACE, as a man speaks with his friend.

Exodus 33:20-23
20. But," he said, "you cannot see my face, for no one may see me and live."
21. Then the LORD said, "There is a place near me where you may stand on a rock.
22. When my glory passes by, I will put you in a cleft in the rock and cover you with my hand until I have passed by.
23. Then I will remove my hand and you will see my back; but my face must not be seen."

It is interesting to see that you can see God Face to Face yet not actually see him. I think it is more like an expression, seeing God Heart to Heart. Not the physical being, but the heart behind the individual. It is a bonding of friendship, no walls put up, but open to each others heart. (as a man speaks to his friend) Fellowship with God is the essence of why we were made.