15 not boasting out of measure in other people's labours, but having hope, your faith increasing, to be enlarged amongst you, according to our rule, yet more abundantly 16 to announce the glad tidings to that [which is] beyond you, not to be boasting in another's rule of things made ready to hand. 17 But he that boasts, let him boast in the Lord.
Matthew Henry's Commentary on 2 Corinthians 10:15-17
Commentary on 2 Corinthians 10:12-18
(Read 2 Corinthians 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.