KJV: Defraud ye not one the other, except it be with consent for a time, that ye may give yourselves to fasting and prayer; and come together again, that Satan tempt you not for your incontinency.
NASB: Stop depriving one another, except by agreement for a time, so that you may devote yourselves to prayer, and come together again so that Satan will not tempt you because of your lack of self-control.
KJV: For we commend not ourselves again unto you, but give you occasion to glory on our behalf, that ye may have somewhat to answer them which glory in appearance, and not in heart.
NASB: We are not again commending ourselves to you but are giving you an occasion to be proud of us, so that you will have an answer for those who take pride in appearance and not in heart.
KJV: Do ye look on things after the outward appearance? If any man trust to himself that he is Christ's, let him of himself think this again, that, as he is Christ's, even so are we Christ's.
NASB: You are looking at things as they are outwardly. If anyone is confident in himself that he is Christ's, let him consider this again within himself, that just as he is Christ's, so also are we.