The thought of foolishness is sin: and the scorner is an abomination to men.

Add thou not unto his words, lest he reprove thee, and thou be found a liar.

And further, by these, my son, be admonished: of making many books there is no end; and much study is a weariness of the flesh.

Ye shall not add unto the word which I command you, neither shall ye diminish ought from it, that ye may keep the commandments of the Lord your God which I command you.

For I testify unto every man that heareth the words of the prophecy of this book, If any man shall add unto these things, God shall add unto him the plagues that are written in this book:

And if any man shall take away from the words of the book of this prophecy, God shall take away his part out of the book of life, and out of the holy city, and from the things which are written in this book.

Proverbs 24:9

Proverbs 30:6

Ecclesiastes 12:12

Deuteronomy 4:2

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Revelation 22:18-19

King James Bible