KJV:
And we beseech you, brethren, to know them which labour among you, and are over you in the Lord, and admonish you;
NASB:
But we request of you, brethren, that you appreciate those who diligently labor among you, and have charge over you in the Lord and give you instruction,
KJV:
I charge you by the Lord that this epistle be read unto all the holy brethren.
NASB:
I adjure you by the Lord to have this letter read to all the brethren.
KJV:
Seeing it is a righteous thing with God to recompense tribulation to them that trouble you;
NASB:
For after all it is only just for God to repay with affliction those who afflict you,
KJV:
In flaming fire taking vengeance on them that know not God, and that obey not the gospel of our Lord Jesus Christ:
NASB:
dealing out retribution to those who do not know God and to those who do not obey the gospel of our Lord Jesus.
KJV:
And with all deceivableness of unrighteousness in them that perish; because they received not the love of the truth, that they might be saved.
NASB:
and with all the deception of wickedness for those who perish, because they did not receive the love of the truth so as to be saved.
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:
The salutation of Paul with mine own hand, which is the token in every epistle: so I write.
NASB:
I, Paul, write this greeting with my own hand, and this is a distinguishing mark in every letter; this is the way I write.
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.