Note, 1. Our comfort depends very much upon the testimony of our own consciences, for us or against us. The belly is here put for the conscience, as Pro 20:27. Now it is of great consequence to us whether that be satisfied, and what that is filled with, for, accordingly, will our satisfaction be and our inward peace. 2. The testimony of our consciences will be for us, or against us, according as we have or have not governed our tongues well. According as the fruit of the mouth is good or bad, unto iniquity or unto righteousness, so the character of the man is, and consequently the testimony of his conscience concerning him. "We ought to take as great care about the words we speak as we do about the fruit of our trees or the increase of the earth, which we are to eat; for, according as they are wholesome or unwholesome, so will the pleasure or the pain be wherewith we shall be filled." So bishop Patrick.

A man's belly shall be satisfied with the fruit of his mouth,.... With his own words and discourses, when they are prudent, pious, and savoury; when they are with grace, and minister it; they are satisfying to himself, to his own mind and conscience, and to his family; to all within his house, which is, as it were, his belly; but, if otherwise, it will not be profitable nor satisfying to either; and therefore, if a man would keep conscience easy, and be useful to others, he ought to take care what he says; see Pro 12:14;

and with the increase of his lips shall he be filled; the same thing as before, expressed in different words, alluding to the sowing, of seed in the earth, and the increase of it; as a man sows he reaps, and enjoys the fruits of his labour; according to what a man sows with his lips, such is his harvest he is afterwards a partaker of.

(Compare Pro 12:14; Pro 13:2). Men's words are the fruit, or, increase of his lips, and when good, benefit them.

satisfied with--(Compare Pro 1:31; Pro 14:14).