I Thessalonians 1:1

KJV - Paul, and Silvanus, and Timotheus, unto the church of the Thessalonians which is in God the Father and in the Lord Jesus Christ: Grace be unto you, and peace, from God our Father, and the Lord Jesus Christ. (Aleph, A, Byz)

NASV - Paul and Silvanus and Timothy, to the church of the Thessalonians in God the Father and the Lord Jesus Christ: Grace to you and peace. (B)

I Thessalonians 2:15

KJV - Who both killed the Lord Jesus, and their own prophets, and have persecuted us; and they please not God, and are contrary to all men: (Byz)

NASV - who both killed the Lord Jesus and the prophets, and drove us out. They are not pleasing to God, but hostile to all men, (Aleph, A, B)

I Thessalonians 3:2

KJV - And sent Timotheus, our brother, and minister of God, and our fellowlabourer in the gospel of Christ, to establish you, and to comfort you concerning your faith: (Byz)

NASV - and we sent Timothy, our brother and God's fellow worker in the gospel of Christ, to strengthen and encourage you as to your faith, (no major manuscripts)

Note: If the KJV followed "B", it would read ". . . our brother and fellowlabourer in the . . . ". If it followed "Aleph" and "A", it would read " . . . our brother and minister of God in the . . . ".

I Thessalonians 3:11

KJV - Now God himself and our Father, and our Lord Jesus Christ, direct our way unto you. (Byz)

NASV - Now may our God and Father Himself and Jesus our Lord direct our way to you; (manuscript sources undetermined)

I Thessalonians 3:13

KJV - To the end he may stablish your hearts unblameable in holiness before God, even our Father, at the coming of our Lord Jesus Christ with all his saints. (Byz)

NASV - so that He may establish your hearts without blame in holiness before our God and Father at the coming of our Lord Jesus with all His saints. (manuscript sources undetermined)

I Thessalonians 3:13

KJV - To the end he may stablish your hearts unblameable in holiness before God, even our Father, at the coming of our Lord Jesus Christ with all his saints. (B, Byz)

NASV - so that He may establish your hearts without blame in holiness before our God and Father at the coming of our Lord Jesus with all His saints. (B, Byz)

NIV - May he strengthen your hearts so that you will be blameless and holy in the presence of our God and Father when our Lord Jesus comes with all his holy ones. (B, Byz)

NLT - May he, as a result, make your hearts strong, blameless, and holy as you stand before God our Father when our Lord Jesus comes again with all his holy people. Amen. (Aleph, A)

HCSB - May He make your hearts blameless in holiness before our God and Father at the coming of our Lord Jesus with all His saints. Amen. (Aleph, A)

I Thessalonians 4:1

KJV - Furthermore then we beseech you, brethren, and exhort you by the Lord Jesus, that as ye have received of us how ye ought to walk and to please God, so ye would abound more and more. (Byz)

NASV - Finally then, brethren, we request and exhort you in the Lord Jesus, that as you received from us instruction as to how you ought to walk and please God (just as you actually do walk), that you excel still more. (Aleph, A, B)

I Thessalonians 5:27

KJV - I charge you by the Lord that this epistle be read unto all the holy brethren. (Aleph-corrected, A, Byz)

NASV - I adjure you by the Lord to have this letter read to all the brethren. (Aleph, B)

I Thessalonians 5:28

KJV - The grace of our Lord Jesus Christ be with you. Amen. (Aleph, A, Byz)

NASV - The grace of our Lord Jesus Christ be with you. (B)