KJV: And if any man obey not our word by this epistle, note that man, and have no company with him, that he may be ashamed.
NASB: If anyone does not obey our instruction in this letter, take special note of that person and do not associate with him, so that he will be put to shame.
KJV: Howbeit for this cause I obtained mercy, that in me first Jesus Christ might shew forth all longsuffering, for a pattern to them which should hereafter believe on him to life everlasting.
NASB: Yet for this reason I found mercy, so that in me as the foremost, Jesus Christ might demonstrate His perfect patience as an example for those who would believe in Him for eternal life.
KJV: But if I tarry long, that thou mayest know how thou oughtest to behave thyself in the house of God, which is the church of the living God, the pillar and ground of the truth.
NASB: but in case I am delayed, I write so that you will know how one ought to conduct himself in the household of God, which is the church of the living God, the pillar and support of the truth.