Isaiah 40:4

Every valley shall be exalted, and every mountain and hill shall be made low; and the uneven shall be made level, and the rough places a plain:

Isaiah 45:2

I will go before thee, and make the rough places smooth; I will break in pieces the doors of brass, and cut in sunder the bars of iron;

Ezekiel 21:26

thus saith the Lord Jehovah: Remove the mitre, and take off the crown; this'shall be no more the same; exalt that which is low, and abase that which is high.

Luke 3:5

Every valley shall be filled, And every mountain and hill shall be brought low; And the crooked shall become straight, And the rough ways smooth;

1 Samuel 2:8

He raiseth up the poor out of the dust, He lifteth up the needy from the dunghill, To make them sit with princes, And inherit the throne of glory: For the pillars of the earth are Jehovah's, And he hath set the world upon them.

Job 40:11-13

Pour forth the overflowings of thine anger; And look upon every one that is proud, and abase him.

Psalm 113:7-8

He raiseth up the poor out of the dust, And lifteth up the needy from the dunghill;

Isaiah 2:12-15

For there shall be a day of Jehovah of hosts upon all that is proud and haughty, and upon all that is lifted up; and it shall be brought low;

Isaiah 42:11

Let the wilderness and the cities thereof lift up their voice , the villages that Kedar doth inhabit; let the inhabitants of Sela sing, let them shout from the top of the mountains.

Isaiah 42:15-16

I will lay waste mountains and hills, and dry up all their herbs; and I will make the rivers islands, and will dry up the pools.

Ezekiel 17:24

And all the trees of the field shall know that I, Jehovah, have brought down the high tree, have exalted the low tree, have dried up the green tree, and have made the dry tree to flourish; I, Jehovah, have spoken and have done it.

Luke 1:52-53

He hath put down princes from their thrones, And hath exalted them of low degree.

Luke 18:14

I say unto you, This man went down to his house justified rather than the other: for every one that exalteth himself shall be humbled; but he that humbleth himself shall be exalted.

Proverbs 2:15

Who are crooked in their ways, And wayward in their paths:

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 and the cities thereof lift up their voice , the villages that Kedar doth inhabit; let the inhabitants of Sela sing, let them shout from the top of the mountains.
1 Samuel 2:8
He raiseth up the poor out of the dust, He lifteth up the needy from the dunghill, To make them sit with princes, And inherit the throne of glory: For the pillars of the earth are Jehovah's, And he hath set the world upon them.
Psalm 113:7
He raiseth up the poor out of the dust, And lifteth up the needy from the dunghill;
Ezekiel 17:24
And all the trees of the field shall know that I, Jehovah, have brought down the high tree, have exalted the low tree, have dried up the green tree, and have made the dry tree to flourish; I, Jehovah, have spoken and have done it.
Ezekiel 21:26
thus saith the Lord Jehovah: Remove the mitre, and take off the crown; this'shall be no more the same; exalt that which is low, and abase that which is high.
Luke 1:52
He hath put down princes from their thrones, 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 the crooked shall become straight, And the rough ways smooth;
Luke 18:14
I say unto you, This man went down to his house justified rather than the other: for every one that exalteth himself shall be humbled; but he that humbleth himself shall be exalted.

Every mountain

Isaiah 2:12
For there shall be a day of Jehovah of hosts upon all that is proud and haughty, and upon all that is lifted up; and it shall be brought low;
Job 40:11
Pour forth the overflowings of thine anger; And look upon every one that is proud, and abase him.

And the

Isaiah 42:16
And I will bring the blind by a way that they know not; in paths that they know not will I lead them; I will make darkness light before them, and crooked places straight. These things will I do, and I will not forsake them.
Isaiah 45:2
I will go before thee, and make the rough places smooth; I will break in pieces the doors of brass, and cut in sunder the bars of iron;
Proverbs 2:15
Who are crooked in their ways, And wayward in their paths:

General references

Isaiah 2:14
and upon all the high mountains, and upon all the hills that are lifted up,
Isaiah 19:23
In that day shall there be a highway out of Egypt to Assyria, and the Assyrian shall come into Egypt, and the Egyptian into Assyria; and the Egyptians shall worship with the Assyrians.
Isaiah 49:11
And I will make all my mountains a way, and my highways shall be exalted.
Mark 1:3
The voice of one crying in the wilderness, Make ye ready the way of the Lord, Make his paths straight;
Luke 1:16
And many of the children of Israel shall be turn unto the Lord their God.

American Standard Version Public Domain