Deuteronomy 12:32

Whatever thing I command you, that shall ye observe to do. Thou shall not add to it, nor diminish from it.

Deuteronomy 4:2

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

Joshua 1:7

Only be strong and very courageous to observe to do according to all the law, which Moses my servant commanded thee. Turn not from it to the right hand or to the left, that thou may have good success wherever thou go.

Proverbs 30:6

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

Revelation 22:18-19

I testify to every man who hears the words of the prophecy of this book, if any man should add to them, God will add to him the seven plagues that are written in this book.

Deuteronomy 13:18

when thou shall hearken to the voice of LORD thy God, to keep all his commandments which I command thee this day, to do that which is right in the eyes of LORD thy God.

Matthew 28:20

teaching them to observe all things, as many as I commanded you. And lo, I am with you all the days, until the end of the age. Truly.

Treasury of Scripture Knowledge

Summary

What thing soever I command you, observe to do it: thou shalt not add thereto, nor diminish from it.

Bible References

Thou shalt not

Deuteronomy 4:2
Ye shall not add to the word which I command you, neither shall ye diminish from it, that ye may keep the commandments of LORD your God which I command you.
Deuteronomy 13:18
when thou shall hearken to the voice of LORD thy God, to keep all his commandments which I command thee this day, to do that which is right in the eyes of LORD thy God.
Joshua 1:7
Only be strong and very courageous to observe to do according to all the law, which Moses my servant commanded thee. Turn not from it to the right hand or to the left, that thou may have good success wherever thou go.
Proverbs 30:6
Add thou not to his words, lest he reprove thee, and thou be found a liar.
Matthew 28:20
teaching them to observe all things, as many as I commanded you. And lo, I am with you all the days, until the end of the age. Truly.
Revelation 22:18
I testify to every man who hears the words of the prophecy of this book, if any man should add to them, God will add to him the seven plagues that are written in this book.

General references

Genesis 6:22
Thus Noah did; according to all that God commanded him, so he did.
Genesis 21:4
And Abraham circumcised his son Isaac when he was eight days old, as God had commanded him.
Leviticus 8:4
And Moses did as LORD commanded him, and the congregation was assembled at the door of the tent of meeting.
Numbers 1:54
Thus did the sons of Israel. According to all that LORD commanded Moses, so they did.
Deuteronomy 1:18
And I commanded you at that time all the things which ye should do.
Deuteronomy 4:2
Ye shall not add to the word which I command you, neither shall ye diminish from it, that ye may keep the commandments of LORD your God which I command you.
Deuteronomy 11:32
And ye shall observe to do all the statutes and the ordinances which I set before you this day.
Psalm 119:4
Thou have commanded thy precepts, that we should observe them diligently.