KJV: Not boasting of things without our measure, that is, of other men's labours; but having hope, when your faith is increased, that we shall be enlarged by you according to our rule abundantly,
NASB: not boasting beyond our measure, that is, in other men's labors, but with the hope that as your faith grows, we will be, within our sphere, enlarged even more by you,
KJV: Therefore it is no great thing if his ministers also be transformed as the ministers of righteousness; whose end shall be according to their works.
NASB: Therefore it is not surprising if his servants also disguise themselves as servants of righteousness, whose end will be according to their deeds.
KJV: Therefore I write these things being absent, lest being present I should use sharpness, according to the power which the Lord hath given me to edification, and not to destruction.
NASB: For this reason I am writing these things while absent, so that when present I need not use severity, in accordance with the authority which the Lord gave me for building up and not for tearing down.
KJV: And I went up by revelation, and communicated unto them that gospel which I preach among the Gentiles, but privately to them which were of reputation, lest by any means I should run, or had run, in vain.
NASB: It was because of a revelation that I went up; and I submitted to them the gospel which I preach among the Gentiles, but I did so in private to those who were of reputation, for fear that I might be running, or had run, in vain.