"Let your speech always be with grace, seasoned with salt, that you may know how you ought to answer each one" (Colossians 4:6, NKJV).

Col 4:6
[Let your speech] Your conversation. In the previous verse the apostle had given a general direction that our conduct toward those who are not professing Christians should be wise and prudent; he here gives a particular direction in regard to our conversation.

[Be alway with grace] Imbued with the spirit of religion. It should be such as religion is fitted to produce; such as to show that the grace of God is in our hearts. Bloomfield supposes that this means "courteous and agreeable, not morose and melancholy." But though this may be included, and though the rule here laid down would lead to that, it cannot be all that is intended. It rather means that our conversation should be such as to show that we are governed by the principles of religion, and that there is unfeigned piety in the heart. This will indeed make us mild, courteous, agreeable, and urbane in our conversation; but it will do more than this. It will imbue our discourse with the spirit of religion, so as to show that the soul is under the influence of love to the Redeemer.

[Seasoned with salt] Salt, among the Greeks, was the emblem of wit. Here the meaning seems to be, that our conversation should be seasoned with piety or grace in a way similar to that in which we employ salt in our food. It makes it wholesome and palatable. So with our conversation. If it be not imbued with the spirit of piety, it is flat, insipid, unprofitable, injurious. The spirit of piety will make it what it should be-useful, agreeable, beneficial to mankind. This does not mean that our conversation is to be always, strictly speaking, religious-wherever we may be-any more than our food should be mere salt; but it means that, whatever be the topic, the spirit of piety should be diffused through it-as the salt in our food should properly season it all-whatever the article of food may be.
(from Barnes' Notes, Electronic Database. Copyright (c) 1997 by Biblesoft)

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Col 4:5-6

And towards others, or those who are within as well as those who are without, "Let your speech be always with grace, v. 6. Let all your discourse be as becomes Christians, suitable to your profession-savoury, discreet, seasonable." Though it be not always of grace, it must be always with grace; and, though the matter of our discourse be that which is common, yet there must be an air of piety upon it and it must be in a Christian manner seasoned with salt. Grace is the salt which seasons our discourse, makes it savoury, and keeps it from corrupting.
(from Matthew Henry's Commentary on the Whole Bible: New Modern Edition, Electronic Database. Copyright (c) 1991 by Hendrickson Publishers, Inc.)

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