Commentaries
4:29-32 Filthy words proceed from corruption in the speaker, and they corrupt the minds and manners of those who hear them: Christians should beware of all such discourse. It is the duty of Christians to seek, by the blessing of God, to bring persons to think seriously, and to encourage and warn believers by their conversation. Be ye kind one to another. This sets forth the principle of love in the heart, and the outward expression of it, in a humble, courteous behaviour. Mark how God's forgiveness causes us to forgive. God forgives us, though we had no cause to sin against him. We must forgive, as he has forgiven us. All lying, and corrupt communications, that stir up evil desires and lusts, grieve the Spirit of God. Corrupt passions of bitterness, wrath, anger, clamour, evil-speaking, and malice, grieve the Holy Spirit. Provoke not the holy, blessed Spirit of God to withdraw his presence and his gracious influences. The body will be redeemed from the power of the grave at the resurrection day. Wherever that blessed Spirit dwells as a Sanctifier, he is the earnest of all the joys and glories of that redemption day; and we should be undone, should God take away his Holy Spirit from us.
29. corrupt—literally, "insipid," without "the salt of grace" (Col 4:6), so worthless and then becoming corrupt: included in "foolish talking" (Eph 5:4). Its opposite is "that which is good to edifying."
communication—language.
that which, &c.—Greek, "whatever is good."
use of edifying—literally, "for edifying of the need," that is, for edifying where it is needed. Seasonably edifying; according as the occasion and present needs of the hearers require, now censure, at another time consolation. Even words good in themselves must be introduced seasonably lest by our fault they prove injurious instead of useful. Trench explains, Not vague generalities, which would suit a thousand other cases equally well, and probably equally ill: our words should be as nails fastened in a sure place, words suiting the present time and the present person, being "for the edifying of the occasion" (Col 4:6).
minister—Greek, "give." The word spoken "gives grace to the hearers" when God uses it as His instrument for that purpose.