(17) He that glorieth, let him glory in the Lord.--Better, He that boasteth, the English translators having again yielded to their besetting weakness for variation. On the general meaning of the phrase, which has been used before, see Note on 1 Corinthians 1:31. Here it has a more special force. "To boast in the Lord" was to boast as in the sight of Christ of that of which the boaster thought as done, not by himself, but by Christ as dwelling in him.
10:12-18 If we would compare ourselves with others who excel us, this would be a good method to keep us humble. The apostle fixes a good rule for his conduct; namely, not to boast of things without his measure, which was the measure God had distributed to him. There is not a more fruitful source of error, than to judge of persons and opinions by our own prejudices. How common is it for persons to judge of their own religious character, by the opinions and maxims of the world around them! But how different is the rule of God's word! And of all flattery, self-flattery is the worst. Therefore, instead of praising ourselves, we should strive to approve ourselves to God. In a word, let us glory in the Lord our salvation, and in all other things only as evidences of his love, or means of promoting his glory. Instead of praising ourselves, or seeking the praise of men, let us desire that honour which cometh from God only.
But he that glorieth, let him glory in the Lord. Not in himself, nor in his outward circumstances of life, or inward endowments of mind; not in his natural or acquired parts; not in his wisdom, knowledge, learning, and eloquence; nor in his own righteousness, labours, and services, much less in other men's labours; nor in his own sense of himself; nor in the opinion and popular applause of others; but in the Lord Jesus Christ, as the author and donor of all gifts, natural and spiritual; in his wisdom, righteousness, sanctification, and redemption; and in his judgment and approbation of men and things, which sense the following words direct unto.