But that which is good — Profitable to the speaker and hearers. To the use of edifying — To forward them in repentance, faith, or holiness. That it may minister grace — Be a means of conveying more grace into their hearts. Hence we learn, what discourse is corrupt, as it were stinking in the nostrils of God; namely, all that is not profitable, not edifying, not apt to minister grace to the hearers.
Related Commentaries of Ephesians 4:29
Ephesians 4:29
29 Let no corrupt communication proceed out of your mouth, but that which is good toh the use of edifying, that it may minister grace unto the hearers.