Joshua 1:7

Only be very firm and bold, taking heed to do according to all the law which Moses my servant commanded thee, do not turn aside therefrom, to the right hand or to the left, - that thou mayest prosper, whithersoever thou goest.

Deuteronomy 5:32

So then ye must observe to do, as Yahweh your God hath commanded you, - ye must not turn aside to the right hand or to the left.

Deuteronomy 28:14

and dost not turn side from any of the words which I am commanding you to-day, to the right hand or to the left, - to go after other gods, to serve them,

Joshua 11:15

As Yahweh commanded Moses his servant, so, Moses commanded Joshua, and, so, Joshua, did, he set aside nothing of all that Yahweh commanded Moses.

Deuteronomy 29:9

Ye must, therefore, keep the words of this covenant, and do them, - that ye may prosper in all that ye do.

Numbers 27:23

and leaned his hands upon him and charged him, - As Yahweh spake by the hand of Moses.

Deuteronomy 12:32

Whatsoever be the thing which I am commanding you, the same, shall ye observe to do, - thou shalt neither add thereunto, nor take away therefrom.

Deuteronomy 31:7

And Moses called for Joshua, and said unto him, in the sight of all Israel. Be firm and bold, for, thou, shalt go with this people into the land which Yahweh sware unto their fathers to give unto them, and, thou shalt cause them to inherit it.

Joshua 1:1

And it came to pass, after the death of Moses the servant of Yahweh, - that Yahweh spake unto Joshua son of Nun, the attendant of Moses, saying:

Joshua 1:8

This scroll of the law must not cease out of thy mouth, but thou must talk to thyself therein, day and night, that thou mayest take heed to do according to all that is written therein, - for, then, shalt thou make thy way prosperous, and, then, shalt thou have good success.

1 Kings 2:3

and keep the observances of Yahweh thy God, by walking in his ways, by keeping his statutes, his commandments, and his regulations and his testimonies, as written in the law of Moses, - to the end thou mayest prosper in all that thou doest, and whithersoever thou turnest thyself;

1 Chronicles 22:13

Then, shalt thou prosper, if thou take heed to do the statutes and the regulations, which Yahweh commanded Moses, concerning Israel, - be strong and bold, thou mayst not be in fear, nor be dismayed.

Proverbs 4:27

Decline not, to the right hand or to the left, - Turn away thy foot from wickedness.

Proverbs 8:20

In the way of righteousness, I march along, in the middle 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
And it came to pass, after the death of Moses the servant of Yahweh, - that Yahweh spake unto Joshua son of Nun, the attendant of Moses, saying:
Joshua 11:15
As Yahweh commanded Moses his servant, so, Moses commanded Joshua, and, so, Joshua, did, he set aside nothing of all that Yahweh commanded Moses.
Numbers 27:23
and leaned his hands upon him and charged him, - As Yahweh spake by the hand of Moses.
Deuteronomy 31:7
And Moses called for Joshua, and said unto him, in the sight of all Israel. Be firm and bold, for, thou, shalt go with this people into the land which Yahweh sware unto their fathers to give unto them, and, thou shalt cause them to inherit it.

Turn not

Deuteronomy 5:32
So then ye must observe to do, as Yahweh your God hath commanded you, - ye must not turn aside to the right hand or to the left.
Deuteronomy 12:32
Whatsoever be the thing which I am commanding you, the same, shall ye observe to do, - thou shalt neither add thereunto, nor take away therefrom.
Deuteronomy 28:14
and dost not turn side from any of the words which I am commanding you to-day, to the right hand or to the left, - to go after other gods, to serve them,
Proverbs 4:27
Decline not, to the right hand or to the left, - Turn away thy foot from wickedness.
Proverbs 8:20
In the way of righteousness, I march along, in the middle of the paths of justice:

That

Deuteronomy 29:9
Ye must, therefore, keep the words of this covenant, and do them, - that ye may prosper in all that ye do.
1 Kings 2:3
and keep the observances of Yahweh thy God, by walking in his ways, by keeping his statutes, his commandments, and his regulations and his testimonies, as written in the law of Moses, - to the end thou mayest prosper in all that thou doest, and whithersoever thou turnest thyself;
1 Chronicles 22:13
Then, shalt thou prosper, if thou take heed to do the statutes and the regulations, which Yahweh commanded Moses, concerning Israel, - be strong and bold, thou mayst not be in fear, nor be dismayed.

General references

Deuteronomy 4:2
Ye shall not add unto the word which, I, am commanding you, neither shall ye take away therefrom, - that ye may keep the commandments of Yahweh your God, which, I, am commanding you.
Deuteronomy 15:5
only if thou do hearken unto the voice of Yahweh thy God, - to observe to do - all this commandment which I am commanding time to-day.
Deuteronomy 29:9
Ye must, therefore, keep the words of this covenant, and do them, - that ye may prosper in all that ye do.
Joshua 10:8
And Yahweh said unto Joshua: Do not fear because of them, for, into thy hand, have I delivered them, - not a man of them shall stand before thee.
Psalm 119:4
Thou, hast commanded thy precepts, that they should be diligently kept.