Deuteronomy 5:32

Ye shall observe to do therefore as Jehovah your God hath commanded you: ye shall not turn aside to the right hand or to the left.

Deuteronomy 17:20

that his heart be not lifted up above his brethren, and that he turn not aside from the commandment, to the right hand, or to the left: to the end that he may prolong his days in his kingdom, he and his children, in the midst of Israel.

Deuteronomy 28:14

and shalt not turn aside from any of the words which I command you this day, to the right hand, or to the left, to go after other gods to serve them.

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 mayest have good success whithersoever thou goest.

Joshua 23:6

Therefore be ye very courageous to keep and to do all that is written in the book of the law of Moses, that ye turn not aside therefrom to the right hand or to the left;

Proverbs 4:27

Turn not to the right hand nor to the left: Remove thy foot from evil.

Deuteronomy 4:1-2

And now, O Israel, hearken unto the statutes and unto the ordinances, which I teach you, to do them; that ye may live, and go in and possess the land which Jehovah, the God of your fathers, giveth you.

Deuteronomy 6:3

Hear therefore, O Israel, and observe to do it; that it may be well with thee, and that ye may increase mightily, as Jehovah, the God of thy fathers, hath promised unto thee, in a land flowing with milk and honey.

Deuteronomy 6:25

And it shall be righteousness unto us, if we observe to do all this commandment before Jehovah our God, as he hath commanded us.

Deuteronomy 8:1

All the commandment which I command thee this day shall ye observe to do, that ye may live, and multiply, and go in and possess the land which Jehovah sware unto your fathers.

Deuteronomy 11:32

And ye shall observe to do all the statutes and the ordinances which I set before you this day.

Deuteronomy 12:32

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

Deuteronomy 24:8

Take heed in the plague of leprosy, that thou observe diligently, and do according to all that the priests the Levites shall teach you: as I commanded them, so ye shall observe to do.

2 Kings 21:8

neither will I cause the feet of Israel to wander any more out of the land which I gave their fathers, if only they will observe to do according to all that I have commanded them, and according to all the law that my servant Moses commanded them.

Psalm 125:5

But as for such as turn aside unto their crooked ways, Jehovah will lead them forth with the workers of iniquity. Peace be upon Israel.

Ezekiel 37:24

And my servant David shall be king over them; and they all shall have one shepherd: they shall also walk in mine ordinances, and observe my statutes, and do them.

2 Peter 2:21

For it were better for them not to have known the way of righteousness, than, after knowing it, to turn back from the holy commandment delivered unto them.

Treasury of Scripture Knowledge

Summary

Ye shall observe to do therefore as the LORD your God hath commanded you: ye shall not turn aside to the right hand or to the left.

Bible References

Ye shall not

Deuteronomy 4:1
And now, O Israel, hearken unto the statutes and unto the ordinances, which I teach you, to do them; that ye may live, and go in and possess the land which Jehovah, the God of your fathers, giveth you.
Deuteronomy 12:32
What thing soever I command you, that shall ye observe to do: thou shalt not add thereto, nor diminish from it.
Deuteronomy 17:20
that his heart be not lifted up above his brethren, and that he turn not aside from the commandment, to the right hand, or to the left: to the end that he may prolong his days in his kingdom, he and his children, in the midst of Israel.
Deuteronomy 28:14
and shalt not turn aside from any of the words which I command you this day, to the right hand, or to the left, to go after other gods to serve them.
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 mayest have good success whithersoever thou goest.
Joshua 23:6
Therefore be ye very courageous to keep and to do all that is written in the book of the law of Moses, that ye turn not aside therefrom to the right hand or to the left;
Psalm 125:5
But as for such as turn aside unto their crooked ways, Jehovah will lead them forth with the workers of iniquity. Peace be upon Israel.
Proverbs 4:27
Turn not to the right hand nor to the left: Remove thy foot from evil.
2 Peter 2:21
For it were better for them not to have known the way of righteousness, than, after knowing it, to turn back from the holy commandment delivered unto them.

General references

Deuteronomy 7:11
Thou shalt therefore keep the commandment, and the statutes, and the ordinances, which I command thee this day, to do them.
Deuteronomy 8:1
All the commandment which I command thee this day shall ye observe to do, that ye may live, and multiply, and go in and possess the land which Jehovah sware unto your fathers.
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 hast commanded us thy precepts, That we should observe them diligently.

American Standard Version Public Domain