Deuteronomy 31:7

And Moses calleth for Joshua, and saith unto him before the eyes of all Israel, 'Be strong and courageous, for thou -- thou dost go in with this people unto the land which Jehovah hath sworn to their fathers to give to them, and thou -- thou dost cause them to inherit it;

Deuteronomy 3:28

and charge Jehoshua, and strengthen him, and harden him, for he doth pass over before this people, and he doth cause them to inherit the land which thou seest.

Deuteronomy 1:38

Joshua son of Nun, who is standing before thee, he goeth in thither; him strengthen thou; for he doth cause Israel to inherit.

Deuteronomy 31:6

be strong and courageous, fear not, nor be terrified because of them, for Jehovah thy God is He who is going with thee; He doth not fail thee nor forsake thee.'

Deuteronomy 31:3

Jehovah thy God He is passing over before thee, He doth destroy these nations from before thee, and thou hast possessed them; Joshua -- he is passing over before thee as Jehovah hath spoken,

Deuteronomy 31:23

and He commandeth Joshua son of Nun, and saith, 'Be strong and courageous, for thou dost bring in the sons of Israel unto the land which I have sworn to them, and I -- I am with thee.'

Joshua 1:6

be strong and courageous, for thou -- thou dost cause this people to inherit the land which I have sworn to their fathers to give to them.

Daniel 10:19

and he saith: Do not fear, O man greatly desired, peace to thee, be strong, yea, be strong; and when he speaketh with me, I have strengthened myself, and I say, Let my lord speak, for thou hast strengthened me.

John 1:17

for the law through Moses was given, the grace and the truth through Jesus Christ did come;

Ephesians 6:10

As to the rest, my brethren, be strong in the Lord, and in the power of his might;

Treasury of Scripture Knowledge

Summary

And Moses called unto Joshua, and said unto him in the sight of all Israel, Be strong and of a good courage: for thou must go with this people unto the land which the LORD hath sworn unto their fathers to give them; and thou shalt cause them to inherit it.

General references

Bible References

For thou must

Deuteronomy 31:3
Jehovah thy God He is passing over before thee, He doth destroy these nations from before thee, and thou hast possessed them; Joshua -- he is passing over before thee as Jehovah hath spoken,
Deuteronomy 1:38
Joshua son of Nun, who is standing before thee, he goeth in thither; him strengthen thou; for he doth cause Israel to inherit.
Deuteronomy 3:28
and charge Jehoshua, and strengthen him, and harden him, for he doth pass over before this people, and he doth cause them to inherit the land which thou seest.
John 1:17
for the law through Moses was given, the grace and the truth through Jesus Christ did come;

General references

Numbers 27:23
and layeth his hands upon him, and chargeth him, as Jehovah hath spoken by the hand of Moses.