Joshua 1:7

Only be strong and very courageous; be careful to do [everything] in accordance with the entire law which Moses My servant commanded you; do not turn from it to the right or to the left, so that you may prosper and be successful wherever you go.

Deuteronomy 5:32

Therefore you shall pay attention and be careful to do just as the Lord your God has commanded you; you shall not turn aside to the right or to the left [deviating from My commandments].

Deuteronomy 28:14

Do not turn aside from any of the words which I am commanding you today, to the right or to the left, to follow and serve other gods.

Joshua 11:15

Just as the Lord had commanded Moses His servant, so Moses had commanded Joshua, and so Joshua did; he left nothing undone of all that the Lord had commanded Moses.

Deuteronomy 29:9

So keep the words of this covenant and obey them, so that you may prosper and be successful in everything that you do.

Numbers 27:23

and Moses laid his hands on Joshua and commissioned him, just as the Lord had commanded through Moses.

Deuteronomy 12:32

“Everything I command you, you shall be careful to do it; you shall not add to it nor take away from it.

Deuteronomy 31:7

Then Moses called to Joshua and said to him in the sight of all [the people of] Israel, “Be strong and courageous, for you will go with this people into the land which the Lord has sworn to their fathers to give them, and you will give it to them as an inheritance.

Joshua 1:1

Now it happened after the death of Moses the servant of the Lord, that the Lord spoke to Joshua the son of Nun, Moses’ servant (attendant), saying,

Joshua 1:8

This Book of the Law shall not depart from your mouth, but you shall read [and meditate on] it day and night, so that you may be careful to do [everything] in accordance with all that is written in it; for then you will make your way prosperous, and then you will be successful.

1 Kings 2:3

Keep the charge of the Lord your God, [that is, fulfill your obligation to] walk in His ways, keep His statutes, His commandments, His precepts, and His testimonies, as it is written in the Law of Moses, so that you may succeed in everything that you do and wherever you turn,

1 Chronicles 22:13

Then you will prosper, if you are careful to observe and fulfill the statutes and ordinances which the Lord commanded Moses concerning Israel. Be strong and courageous, do not fear nor be dismayed.

Proverbs 4:27


Do not turn away to the right nor to the left [where evil may lurk];
Turn your foot from [the path of] evil.

Proverbs 8:20


“I, [Wisdom, continuously] walk in the way of righteousness,
In the midst of the paths of justice,

Treasury of Scripture Knowledge

Summary

Only be thou strong and very courageous, that thou mayest 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 prosper whithersoever thou goest.

Bible References

Which moses

Joshua 1:1
Now it happened after the death of Moses the servant of the Lord, that the Lord spoke to Joshua the son of Nun, Moses’ servant (attendant), saying,
Joshua 11:15
Just as the Lord had commanded Moses His servant, so Moses had commanded Joshua, and so Joshua did; he left nothing undone of all that the Lord had commanded Moses.
Numbers 27:23
and Moses laid his hands on Joshua and commissioned him, just as the Lord had commanded through Moses.
Deuteronomy 31:7
Then Moses called to Joshua and said to him in the sight of all [the people of] Israel, “Be strong and courageous, for you will go with this people into the land which the Lord has sworn to their fathers to give them, and you will give it to them as an inheritance.

Turn not

Deuteronomy 5:32
Therefore you shall pay attention and be careful to do just as the Lord your God has commanded you; you shall not turn aside to the right or to the left [deviating from My commandments].
Deuteronomy 12:32
“Everything I command you, you shall be careful to do it; you shall not add to it nor take away from it.
Deuteronomy 28:14
Do not turn aside from any of the words which I am commanding you today, to the right or to the left, to follow and serve other gods.
Proverbs 4:27

Do not turn away to the right nor to the left [where evil may lurk];
Turn your foot from [the path of] evil.
Proverbs 8:20

“I, [Wisdom, continuously] walk in the way of righteousness,
In the midst of the paths of justice,

That

Deuteronomy 29:9
So keep the words of this covenant and obey them, so that you may prosper and be successful in everything that you do.
1 Kings 2:3
Keep the charge of the Lord your God, [that is, fulfill your obligation to] walk in His ways, keep His statutes, His commandments, His precepts, and His testimonies, as it is written in the Law of Moses, so that you may succeed in everything that you do and wherever you turn,
1 Chronicles 22:13
Then you will prosper, if you are careful to observe and fulfill the statutes and ordinances which the Lord commanded Moses concerning Israel. Be strong and courageous, do not fear nor be dismayed.

General references

Deuteronomy 4:2
You shall not add to the word which I am commanding you, nor take away from it, so that you may keep the commandments of the Lord your God which I am commanding you.
Deuteronomy 15:5
if only you will listen to and obey the voice of the Lord your God, to observe carefully all these commandments which I am commanding you today.
Deuteronomy 29:9
So keep the words of this covenant and obey them, so that you may prosper and be successful in everything that you do.
Joshua 10:8
The Lord said to Joshua, “Do not fear them, because I have given them into your hand; not one of them shall stand before you.”
Psalm 119:4

You have ordained Your precepts,
That we should follow them with [careful] diligence.