# Now all of us

Here the word "us" refers to all believers, including Paul and the Corinthians. 

# with unveiled faces, see the glory of the Lord

Unlike the Israelites who could not see God's glory reflected on Moses's face because he had covered it with a veil, there is nothing to prevent believers from seeing and understanding God's glory. 

# We are being transformed into the same glorious likeness

"The Lord is transforming us into his same glorious likeness" 

# from one degree of glory into another

"from one amount of glory to another amount of glory." This means that the Spirit is constantly increasing the glory of believers.

# just as from the Lord

"just as this comes from the Lord"