NET

6 who made us adequate to be servants of a new covenant not based on the letter but on the Spirit, for the letter kills, but the Spirit gives life.

Darby

6 who has also made us competent, [as] ministers of [the] new covenant^D8398; not of letter, but of spirit. For the letter kills^D8399, but the Spirit quickens.

Darby Bible Notes

covenant - The omission of the article makes it characteristic, as in the case of 'letter' and 'spirit;' perhaps it may be rendered 'competent [as] new covenant ministers.' kills - Or 'For letter kills.'

KJV

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^K6959.

KJV Bible Notes

giveth life: Or, quickeneth.