Proverbs 30:6
Do not add unto his words, lest he reprove thee, and thou be found a liar.
Deuteronomy 4:2
Ye shall not add unto the word which I command you, neither shall ye diminish anything from it, that ye may keep the commandments of the LORD your God which I command you.
Deuteronomy 12:32
Keep thyself, and do all that I command you; thou shalt not add to it nor diminish from it.
Job 13:7-9
Are ye to speak iniquity for God? Are ye to speak deceitfully for him?
1 Corinthians 15:15
And we are even found false witnesses of God because we have testified of God that he raised up the Christ, whom he did not raise up, if it so be that the dead do not rise.
Revelation 22:18-19
For I testify unto everyone that hears the words of the prophecy of this book, If anyone shall add unto these things, God shall add unto him the plagues that are written in this book;