2 Corithians 3

 Comparing the law of Moses to the gospel of Jesus Christ and personal revelation, Paul teaches - 

"Forasmuch as ye are manifestly declared to be the epistle of Christ ministered by us, written not with ink, but with the Spirit of the living God; not in tables of stone, but in fleshy tables of the heart.

4 And such trust have we through Christ to God-ward:

5 Not that we are sufficient of ourselves to think any thing as of ourselves; but our sufficiency is of God;

6 Who also hath made us able ministers of the new testament; not of the letter, but of the spirit: for the letter killeth, but the spirit giveth life."  (2 Corinthians 3:3–6)

I think this is the difference between the glory of the Celestial kingdom and other kingdoms.