Proverbs 30:6
Do not add to his words, lest he reprove you, and prove you to be a liar.
Deuteronomy 4:2
Do not add a thing to what I command you nor subtract from it, so that you may keep the commandments of the Lord your God that I am delivering to you.
Deuteronomy 12:32
You must be careful to do everything I am commanding you. Do not add to it or subtract from it!
Job 13:7-9
Will you speak wickedly on God's behalf? Will you speak deceitfully for him?
1 Corinthians 15:15
Also, we are found to be false witnesses about God, because we have testified against God that he raised Christ from the dead, when in reality he did not raise him, if indeed the dead are not raised.
Revelation 22:18-19
I testify to the one who hears the words of the prophecy contained in this book: If anyone adds to them, God will add to him the plagues described in this book.