en_tn_condensed/2co/03/06.md

a covenant not of the letter

The phrase alludes to the Old Testament law. Alternate translation: "a covenant not based on commands that men have written"

but of the Spirit

"but a covenant of the Spirit" or "but a covenant based on what the Spirit does"

the letter kills

Paul speaks of the Old Testament law as a person who kills. Following that law leads to spiritual death. Alternate translation: "the written law leads to death"