Isaiah 40:4

Let all valleys be exalted, and every mountain and hill be laid low. Whatso is crooked, let it be made straight, and let the rough places be made plain fields.

Isaiah 45:2

I will go before thee, and make the crooked straight. I shall break the brazen doors, and burst the iron bars.

Ezekiel 21:26

Thus sayeth the LORD God: Take away the mitre, and put off the crown, and so is it away: the humble is exalted, and the proud brought low.

Luke 3:5

Every valley shall be filled, and every mountain and hill shall be brought low: And crooked things shall be made straight: and the rough ways shall be made smooth.

1 Samuel 2:8

He raiseth up the poor out of the dust, and lifteth up the beggar from the dunghill: to set them among princes, and to inherit them with the seat of glory. For the pillars of the earth are the LORD's, and he hath set the round world upon them.

Job 40:11-13

pour out thy indignation of thy wrath; see that thou cast down all the proud,

Psalm 113:7-8

Which taketh up the simple out of the dust, and lifteth the poor out of the mire,

Isaiah 2:12-15

For the day of the LORD of Hosts shall go over all pride and presumption, upon all them that exalt themselves, and shall bring them all down:

Isaiah 42:11

Let the wilderness with her cities lift up her voice; the towns also that be in Cedar. Let them be glad that sit upon rocks of stone; and let them cry down from the high mountains

Isaiah 42:15-16

I will make waste both mountain and hill, and dry up every green thing that groweth thereon. I will dry up the floods of water, and drink up the rivers.

Ezekiel 17:24

And all the trees of the field shall know, that I the LORD have brought down the high tree, and set the low tree up: that I have dried up the green tree, and made the dry tree to flourish: Even I the LORD that spake it, have also brought it to pass.'"

Luke 1:52-53

He putteth Down the mighty from their seats, and hath exalted them of low degree.

Luke 18:14

I tell you, This man departed home to his house justified more than the other. For every man that exalteth himself, shall be brought low: And he that humbleth himself, shall be exalted."

Proverbs 2:15

Whose ways are crooked, and their paths slanderous;

Treasury of Scripture Knowledge

Summary

Every valley shall be exalted, and every mountain and hill shall be made low: and the crooked shall be made straight, and the rough places plain:

Every mountain

Bible References

Valley

Isaiah 42:11
Let the wilderness with her cities lift up her voice; the towns also that be in Cedar. Let them be glad that sit upon rocks of stone; and let them cry down from the high mountains
1 Samuel 2:8
He raiseth up the poor out of the dust, and lifteth up the beggar from the dunghill: to set them among princes, and to inherit them with the seat of glory. For the pillars of the earth are the LORD's, and he hath set the round world upon them.
Psalm 113:7
Which taketh up the simple out of the dust, and lifteth the poor out of the mire,
Ezekiel 17:24
And all the trees of the field shall know, that I the LORD have brought down the high tree, and set the low tree up: that I have dried up the green tree, and made the dry tree to flourish: Even I the LORD that spake it, have also brought it to pass.'"
Ezekiel 21:26
Thus sayeth the LORD God: Take away the mitre, and put off the crown, and so is it away: the humble is exalted, and the proud brought low.
Luke 1:52
He putteth Down the mighty from their seats, and hath exalted them of low degree.
Luke 3:5
Every valley shall be filled, and every mountain and hill shall be brought low: And crooked things shall be made straight: and the rough ways shall be made smooth.
Luke 18:14
I tell you, This man departed home to his house justified more than the other. For every man that exalteth himself, shall be brought low: And he that humbleth himself, shall be exalted."

Every mountain

Isaiah 2:12
For the day of the LORD of Hosts shall go over all pride and presumption, upon all them that exalt themselves, and shall bring them all down:
Job 40:11
pour out thy indignation of thy wrath; see that thou cast down all the proud,

And the

Isaiah 42:16
I will bring the blind into the street, that they know not: and lead them in to a foot path, that they are ignorant in. I shall make darkness light before them, and the thing that is crooked to be straight. These things will I do, and not forget them.
Isaiah 45:2
I will go before thee, and make the crooked straight. I shall break the brazen doors, and burst the iron bars.
Proverbs 2:15
Whose ways are crooked, and their paths slanderous;

General references

Isaiah 2:14
upon all high hills, and upon all stout mountains,
Isaiah 19:23
Then shall there be a common way out of Egypt into Assyria. The Assyrians shall come into Egypt, and the Egyptians into Assyria. The Egyptians also and the Assyrians shall both have one God's service.
Isaiah 49:11
I will make ways upon all my mountains, and my foot paths shall be exalted.
Mark 1:3
"The voice of a crier in the wilderness, Prepare ye the way of the Lord, make his paths straight."
Luke 1:16
and many of the children of Israel shall he turn to their Lord God.