2 Chronicles 20:15

And he will say, Attend all Judah, and ye inhabitants of Jerusalem, and thou, king Jehoshaphat. Thus said Jehovah to you, Ye shall not fear, and ye shall not be terrified from the face of this great multitude; for not to you the battle but to God.

1 Samuel 17:47

And all this assembly shall know that not with sword and with spear Jehovah will save, for to Jehovah the battle, and he gave you into our hand.

2 Chronicles 32:7-8

Be strong and be firm ye shall not fear and ye shall not be terrified-from the face of the king of Assur, and from before all the multitude which are with him: for with us much more than with him.

Exodus 14:13-14

And Moses will say to the people, Ye shall not fear; stand ye and see the deliverance of Jehovah, which he will do to you this day: for the Egyptians whom ye saw this day, ye shall not add to see them more forever.

Deuteronomy 1:29-30

And I said to you, Ye shall not be terrified, and ye shall not be afraid of them.

Deuteronomy 20:1

When thou shalt go forth to war against thine enemy, and thou sawest horse and chariot, a multitude of people more than thou, thou shalt not be afraid of them, for Jehovah thy God is with thee, he bringing thee up out of the land of Egypt

Deuteronomy 20:4

For Jehovah your God goes with you to war with you against your enemies, to save you.

Deuteronomy 31:6

Be strong and be active; ye shall not fear, and ye shall not be terrified from their face, for Jehovah thy God, he goes with thee; he will not relax thee and he will not forsake thee.

Deuteronomy 31:8

And Jehovah he goes before thee; he shall be with thee; he will not relax thee, and he will not forsake thee; thou shalt not fear, and thou shalt not be dismayed.

Joshua 11:6

And Jehovah will say to Joshua, Thou shalt not be afraid of their face: for to-morrow about this time I gave them all wounded before Israel: thou shalt hamstring their horses and their chariots thou shalt burn in fire.

Nehemiah 4:14

And I shall see, and I shall rise up and say to the nobles and to the prefects and to the rest of the people, Ye shall not be afraid from their face: remember Jehovah great and terrible; and war for yourselves, your sons and your daughters, your wives and your houses.

Psalm 17:1-2

Prayer of David. Hear justice, O Jehovah, attend to my outcry, give ear to my prayer, not in lips of deceit.

Isaiah 41:10-16

Thou shalt not fear, for I am with thee: thou shalt not look around for help for I thy God will strengthen thee; also I helped thee; also I held thee up with the right hand of my justice.

Isaiah 43:1-2

And now, thus said Jehovah creating thee, O Jacob, and forming thee, O Israel, Thou shalt not fear, for I redeemed thee; I called by thy name; thou art to me.

Treasury of Scripture Knowledge

Summary

And he said, Hearken ye, all Judah, and ye inhabitants of Jerusalem, and thou king Jehoshaphat, Thus saith the LORD unto you, Be not afraid nor dismayed by reason of this great multitude; for the battle is not yours, but God's.

Bible References

The battle

2 Chronicles 32:8
With him an arm of flesh; and with us Jehovah our God to help, and to war our wars. And the people will lean upon the words of Hezekiah king of Judah.
1 Samuel 17:47
And all this assembly shall know that not with sword and with spear Jehovah will save, for to Jehovah the battle, and he gave you into our hand.