Isaiah 7:4

and thou shalt say unto him, Take heed and be quiet; fear not, and let not thy heart faint before these two ends of smoking firebrands, because of the fierce anger of Rezin and Syria, and of the son of Remaliah.

Deuteronomy 20:3

and shall say unto them, Hear, Israel, ye are approaching this day unto battle against your enemies: let not your hearts faint, fear not, and do not tremble, neither be afraid of them;

Isaiah 30:15

For thus saith the Lord Jehovah, the Holy One of Israel: In returning and rest shall ye be saved, in quietness and confidence shall be your strength; but ye would not.

Isaiah 35:4

Say to them that are of a timid heart, Be strong, fear not; behold your God: vengeance cometh, the recompense of God! He will come himself, and save you.

Amos 4:11

I have overthrown among you, like God's overthrow of Sodom and Gomorrah, and ye were as a brand plucked out of the burning; yet have ye not returned unto me, saith Jehovah.

1 Samuel 17:32

And David said to Saul, Let no man's heart fail because of him: thy servant will go and fight with this Philistine.

Lamentations 3:26

It is good that one should both wait, and that in silence, for the salvation of Jehovah.

Zechariah 3:2

And Jehovah said unto Satan, Jehovah rebuke thee, O Satan! Yea, Jehovah that hath chosen Jerusalem rebuke thee! Is not this a brand plucked out of the fire?

Matthew 24:6

But ye will hear of wars and rumours of wars. See that ye be not disturbed; for all these things must take place, but it is not yet the end.

Exodus 14:13-14

And Moses said to the people, Fear not: stand still, and see the salvation of Jehovah, which he will work for you to-day; for the Egyptians whom ye have seen to-day, ye shall see them again no more for ever.

2 Kings 15:29-30

In the days of Pekah king of Israel, Tiglath-Pileser king of Assyria came and took Ijon, and Abel-Beth-Maachah, and Janoah, and Kedesh, and Hazor, and Gilead, and Galilee, all the land of Naphtali, and carried them captive to Assyria.

2 Chronicles 20:17

Ye shall not have to fight on this occasion: set yourselves, stand and see the salvation of Jehovah who is with you! Judah and Jerusalem, fear not nor be dismayed; to-morrow go out against them, and Jehovah will be with you.

Isaiah 7:1

And it came to pass in the days of Ahaz, the son of Jotham, the son of Uzziah, king of Judah, that Rezin the king of Syria, and Pekah the son of Remaliah, king of Israel, came up to Jerusalem to make war against it, but they were not able to fight against it.

Isaiah 7:8

for the head of Syria is Damascus, and the head of Damascus is Rezin; and within sixty-five years shall Ephraim be broken, so as to be no more a people;

Isaiah 8:4

For before the lad knoweth to cry, My father! and, My mother! the riches of Damascus and the spoil of Samaria shall be taken away before the king of Assyria.

Isaiah 8:11-14

For Jehovah spoke thus to me with a strong hand, and he instructed me not to walk in the way of this people, saying,

Isaiah 10:24

Therefore thus saith the Lord, Jehovah of hosts: O my people that dwellest in Zion, be not afraid of the Assyrian; he shall smite thee with a rod, and shall lift up his staff against thee, after the manner of Egypt:

Isaiah 30:7

For Egypt shall help in vain, and to no purpose; therefore have I named her, Arrogance, that doeth nothing.

Isaiah 41:14

Fear not, thou worm Jacob, ye men of Israel; I will help thee, saith Jehovah, and thy Redeemer, the Holy One of Israel.

Isaiah 51:12-13

I, even I, am he that comforteth you: who art thou, that thou fearest a man that shall die, and the son of man that shall become as grass;

Matthew 10:28

And be not afraid of those who kill the body, but cannot kill the soul; but fear rather him who is able to destroy both soul and body in hell.

Treasury of Scripture Knowledge

Summary

And say unto him, Take heed, and be quiet; fear not, neither be fainthearted for the two tails of these smoking firebrands, for the fierce anger of Rezin with Syria, and of the son of Remaliah.

Neither be faint-hearted

Bible References

Take heed

Isaiah 30:7
For Egypt shall help in vain, and to no purpose; therefore have I named her, Arrogance, that doeth nothing.
Exodus 14:13
And Moses said to the people, Fear not: stand still, and see the salvation of Jehovah, which he will work for you to-day; for the Egyptians whom ye have seen to-day, ye shall see them again no more for ever.
2 Chronicles 20:17
Ye shall not have to fight on this occasion: set yourselves, stand and see the salvation of Jehovah who is with you! Judah and Jerusalem, fear not nor be dismayed; to-morrow go out against them, and Jehovah will be with you.
Lamentations 3:26
It is good that one should both wait, and that in silence, for the salvation of Jehovah.

Fear not

Isaiah 8:11
For Jehovah spoke thus to me with a strong hand, and he instructed me not to walk in the way of this people, saying,
Isaiah 35:4
Say to them that are of a timid heart, Be strong, fear not; behold your God: vengeance cometh, the recompense of God! He will come himself, and save you.
Isaiah 41:14
Fear not, thou worm Jacob, ye men of Israel; I will help thee, saith Jehovah, and thy Redeemer, the Holy One of Israel.
Isaiah 51:12
I, even I, am he that comforteth you: who art thou, that thou fearest a man that shall die, and the son of man that shall become as grass;
Matthew 10:28
And be not afraid of those who kill the body, but cannot kill the soul; but fear rather him who is able to destroy both soul and body in hell.
Matthew 24:6
But ye will hear of wars and rumours of wars. See that ye be not disturbed; for all these things must take place, but it is not yet the end.

Neither be faint-hearted

Deuteronomy 20:3
and shall say unto them, Hear, Israel, ye are approaching this day unto battle against your enemies: let not your hearts faint, fear not, and do not tremble, neither be afraid of them;
1 Samuel 17:32
And David said to Saul, Let no man's heart fail because of him: thy servant will go and fight with this Philistine.

The two tails

Isaiah 7:8
for the head of Syria is Damascus, and the head of Damascus is Rezin; and within sixty-five years shall Ephraim be broken, so as to be no more a people;
Isaiah 8:4
For before the lad knoweth to cry, My father! and, My mother! the riches of Damascus and the spoil of Samaria shall be taken away before the king of Assyria.
2 Kings 15:29
In the days of Pekah king of Israel, Tiglath-Pileser king of Assyria came and took Ijon, and Abel-Beth-Maachah, and Janoah, and Kedesh, and Hazor, and Gilead, and Galilee, all the land of Naphtali, and carried them captive to Assyria.
Amos 4:11
I have overthrown among you, like God's overthrow of Sodom and Gomorrah, and ye were as a brand plucked out of the burning; yet have ye not returned unto me, saith Jehovah.