Deuteronomy 5:32

Ye shall observe to do therefore as 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 not be lifted up above his brothers, 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 shall 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 may have good success wherever thou go.

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 not turn 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 to the statutes and to the ordinances, which I teach you, to do them, that ye may live, and go in and possess the land which LORD, the 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 increase mightily, as LORD, the God of thy fathers, has promised to thee, in a land flowing with milk and honey.

Deuteronomy 6:25

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

Deuteronomy 8:1

All the commandment which I command thee this day ye shall observe to do, that ye may live, and multiply, and go in and possess the land which LORD swore to 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

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

Deuteronomy 24:8

Take heed in the disease 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

Psalm 125:5

But as for such as turn aside to their crooked ways, LORD 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 my 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 having knowing it, to turn back from the holy commandment delivered to 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 to the statutes and to the ordinances, which I teach you, to do them, that ye may live, and go in and possess the land which LORD, the God of your fathers, gives you.
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 17:20
that his heart not be lifted up above his brothers, 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 shall 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 may have good success wherever thou go.
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 not turn aside therefrom to the right hand or to the left;
Psalm 125:5
But as for such as turn aside to their crooked ways, LORD 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 having knowing it, to turn back from the holy commandment delivered to them.

General references

Deuteronomy 7:11
Thou shall 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 ye shall observe to do, that ye may live, and multiply, and go in and possess the land which LORD swore to 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 have commanded thy precepts, that we should observe them diligently.