2 Corinthians 10:7, 12, 15

You are looking [only] at the outward appearance of things. If anyone is confident that he is Christ’s, he should reflect and consider this, that just as he is Christ’s, so too are we.

We do not have the audacity to put ourselves in the same class or compare ourselves with some who [supply testimonials to] commend themselves. When they measure themselves by themselves and compare themselves with themselves, they lack wisdom and behave like fools.

We do not go beyond our proper limit, boasting in the work of other men, but we have the hope that as your faith [in Christ and His divine power] continues to grow, our field among you may be greatly expanded [but still within the limits of our commission]