Deuteronomy 5:32

Ye shall observe to do, therefore, as the LORD your God has 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 sons, in the midst of Israel.

Deuteronomy 28:14

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

Joshua 1:7

Only be thou strong and very courageous that thou mayest keep and do according to all the law, which Moses my slave commanded thee; turn not from it to the right hand or to the left that thou may be prospered in all the things that thou doest.

Joshua 23:6

Be ye therefore very courageous to keep and to do all that is written in the book of the law of Moses without turning aside 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

Now, therefore, hear, O Israel, the statutes and the rights which I teach you, for in doing them ye shall live and go in and inherit the land which the LORD God of your fathers gives you.

Deuteronomy 6:3

Hear, therefore, O Israel, and observe to do it that it may be well with thee and that ye may be multiplied exceedingly (as the LORD God of thy fathers has said unto thee) in the land that flows with milk and honey.

Deuteronomy 6:25

And we shall have justice when we keep ourselves by doing all these commandments before the LORD our God, as he has commanded us.

Deuteronomy 8:1

Take care to do all the commandments which I command thee this day that ye may live and be multiplied and enter in and inherit the land which the LORD swore unto your fathers.

Deuteronomy 11:32

Keep yourselves, therefore, to do all the statutes and rights which I set before you this day.

Deuteronomy 12:32

Keep thyself, and do all that I command you; thou shalt not add to it nor diminish from it.

Deuteronomy 24:8

Keep yourselves from 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 take care to do.

2 Kings 21:8

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

Psalm 125:5

As for such as turn aside unto their crooked ways, the LORD shall take them away with the workers of iniquity; and peace shall be upon Israel.

Ezekiel 37:24

And David my slave shall be king over them; and they all shall have one shepherd; they shall also walk within my rights and keep my statutes and do them.

2 Peter 2:21

For it would have been better for them not to have known the way of righteousness, than, after they have known 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
Now, therefore, hear, O Israel, the statutes and the rights which I teach you, for in doing them ye shall live and go in and inherit the land which the LORD God of your fathers gives you.
Deuteronomy 12:32
Keep thyself, and do all that I command you; thou shalt not add to it 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 sons, in the midst of Israel.
Deuteronomy 28:14
And thou shalt not go aside from any of the words which I command thee this day to the right hand or to the left, to go after other gods to serve them.
Joshua 1:7
Only be thou strong and very courageous that thou mayest keep and do according to all the law, which Moses my slave commanded thee; turn not from it to the right hand or to the left that thou may be prospered in all the things that thou doest.
Joshua 23:6
Be ye therefore very courageous to keep and to do all that is written in the book of the law of Moses without turning aside to the right hand or to the left
Psalm 125:5
As for such as turn aside unto their crooked ways, the LORD shall take them away with the workers of iniquity; and peace shall 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 would have been better for them not to have known the way of righteousness, than, after they have known it, to turn back from the holy commandment delivered unto them.

General references

Deuteronomy 7:11
Keep, therefore, the commandments and statutes and rights, which I command thee this day, to do them.
Deuteronomy 8:1
Take care to do all the commandments which I command thee this day that ye may live and be multiplied and enter in and inherit the land which the LORD swore unto your fathers.
Deuteronomy 11:32
Keep yourselves, therefore, to do all the statutes and rights which I set before you this day.
Psalm 119:4
Thou hast commanded us to keep thy precepts diligently.