Galatians 1:9
I say it again, if any one preach to you any other gospel than what ye have received, let him be accursed.
Romans 16:17
Now I exhort you, brethren, to mark those who cause divisions and offences, contrary to the doctrine which ye have learned:
2 Corinthians 1:17
Now when I intended this, was I chargeable with levity? or what I purpose, do I purpose from carnal motives, that with me there should be yea, yea, and then no, no?
2 Corinthians 13:1-2
This, I say, is the third time I am coming to you: and at the mouth of two or three witnesses shall every word be established.
Philippians 3:1
Finally, my brethren, rejoice in the Lord. To write the same things to you is not irksome to me, and for you it is safe.
Philippians 4:4
Rejoice in the Lord always, and again I say, Rejoice.
Revelation 22:18-19
I testify to every one that heareth the words of the prophecy of this book, If any one add to these things, God shall add unto him the plagues that are written in this book: