Matthew Poole and continuators on Ephesians 4:29

29 Let no corrupt communication proceed out of your mouth, but that which is good to the use of edifying that it may minister grace to the hearers .

Unprofitable, unsavoury, not seasoned with the salt of prudence, Col. 4.6. see Mark. 9.50.

Gr. to the edification of use, by an Hypallage for, to the use of edifying, (as our Translators render it) implying, that the great use of Speech is to Edifie those with whom we converse. But the same word translated use, signifies likewise profit, and necessity, and by an Hebraism this (as the latter Substantive) may be instead of an Adjective, and the words translated, to usefull, or profitable edifying, or (according to the Marginal reading) to edifie profitably, with little difference of sense from the former: or to necessary edifying, and then it respects the condition and necessities of the Hearers, to which our discourse must be suited by way of instruction, reprehension, exhortation, or consolation as their case requires.

By which some grace may be communicated to, or encreased in them by instruction, reprehension, exhortation, &c.

Marginal references: Chap. 5.4.; Or, to edifie profitably.