Where is that in Scripture?
Should you believe anything after Deuteronomy 4:2? "You shall not add to the word that I command you, nor take from it, that you may keep the commandments of the Lord your God that I command you."
How about these verses:
Rev. 22:18-19
Proverbs 30:5-6
Matthew: 24:24
Deut. 13:1-10
Those are a few I know but my brain is on vacation after my move