Isaiah 57:14

And he will say, Cast ye up, cast ye up, prepare the way, take up the stumbling-block out of the way of my people.

Isaiah 62:10

Go through, go through the gates; prepare ye the way of the people; cast up, cast up the highway; gather out the stones; lift up an ensign for the peoples.

Isaiah 40:3

The voice of one that crieth, Prepare ye in the wilderness the way of Jehovah; make level in the desert a highway for our God.

Isaiah 35:8

And a highway shall be there, and a way, and it shall be called The way of holiness; the unclean shall not pass over it; but is shall be for the redeemed : the wayfaring men, yea fools, shall not err therein .

Jeremiah 18:15

For my people have forgotten me, they have burned incense to false gods ; and they have been made to stumble in their ways, in the ancient paths, to walk in bypaths, in a way not cast up;

Luke 3:5-6

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;

Romans 14:13

Let us not therefore judge one another any more: but judge ye this rather, that no man put a stumblingblock in his brother's way, or an occasion of falling.

1 Corinthians 1:23

but we preach Christ crucified, unto Jews a stumblingblock, and unto Gentiles foolishness;

1 Corinthians 8:9

But take heed lest by any means this liberty of yours become a stumblingblock to the weak.

1 Corinthians 8:13

Wherefore, if meat causeth my brother to stumble, I will eat no flesh for evermore, that I cause not my brother to stumble.

1 Corinthians 10:32-33

Give no occasions of stumbling, either to Jews, or to Greeks, or to the church of God:

2 Corinthians 6:3

giving no occasion of stumbling in anything, that our ministration be not blamed;

Hebrews 12:13

and make straight paths for your feet, that that which is lame be not turned out of the way, but rather be healed.

Treasury of Scripture Knowledge

Summary

And shall say, Cast ye up, cast ye up, prepare the way, take up the stumblingblock out of the way of my people.

Bible References

Cast

Isaiah 35:8
And a highway shall be there, and a way, and it shall be called The way of holiness; the unclean shall not pass over it; but is shall be for the redeemed : the wayfaring men, yea fools, shall not err therein .
Isaiah 40:3
The voice of one that crieth, Prepare ye in the wilderness the way of Jehovah; make level in the desert a highway for our God.
Isaiah 62:10
Go through, go through the gates; prepare ye the way of the people; cast up, cast up the highway; gather out the stones; lift up an ensign for the peoples.
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;

Take

Romans 14:13
Let us not therefore judge one another any more: but judge ye this rather, that no man put a stumblingblock in his brother's way, or an occasion of falling.
1 Corinthians 1:23
but we preach Christ crucified, unto Jews a stumblingblock, and unto Gentiles foolishness;
1 Corinthians 8:9
But take heed lest by any means this liberty of yours become a stumblingblock to the weak.
1 Corinthians 10:32
Give no occasions of stumbling, either to Jews, or to Greeks, or to the church of God:
2 Corinthians 6:3
giving no occasion of stumbling in anything, that our ministration be not blamed;
Hebrews 12:13
and make straight paths for your feet, that that which is lame be not turned out of the way, but rather be healed.

General references

Deuteronomy 19:3
Thou shalt prepare thee the way, and divide the borders of thy land, which Jehovah thy God causeth thee to inherit, into three parts, that every manslayer may flee thither.
Isaiah 35:3
Strengthen ye the weak hands, and confirm the feeble knees.
Isaiah 49:11
And I will make all my mountains a way, and my highways shall be exalted.

American Standard Version Public Domain