12 We do not dare to classify or compare ourselves with some of those who commend themselves. But when they measure themselves by one another, and compare themselves with one another, they do not show good sense. 13 We, however, will not boast beyond limits, but will keep within the field that God has assigned to us, to reach out even as far as you. 14 For we were not overstepping our limits when we reached you; we were the first to come all the way to you with the good news of Christ. 15 We do not boast beyond limits, that is, in the labors of others; but our hope is that, as your faith increases, our sphere of action among you may be greatly enlarged, 16 so that we may proclaim the good news in lands beyond you, without boasting of work already done in someone else's sphere of action.

Matthew Henry's Commentary on 2 Corinthians 10:12-16

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.