Paul explains that he does not need praise for what he writes and explains is the Gospel of Jesus Christ; “…written not with ink, but with the Spirit…” (2 Corinthians 3:3) Essentially he is saying that the Gospel of Jesus Christ is not made of men, sure it can be written down… but the Gospel of Jesus Christ comes from the Spirit.
Paul explains a little about the veil that was taken from Moses when he saw God face-to-face in Exodus 33-34. For we too have a veil over our eyes that makes us see things plainly. However, to fully understand the workings of God we cannot understand them in our Physical state, the veil must be removed.
Paul goes on to explain that “…where the Spirit of the Lord is, there is liberty.” (2 Corinthians 3:17). Essentially, any nation or person that turns away from God will lose its Liberty.