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 a man crying out in the wilderness, Prepare ye the way of LORD, make straight 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 [in it].

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 will be filled, and every mountain and hill will be brought low. And the crooked things will be into straight and the rough into smooth ways.

Romans 14:13

Let us not therefore criticize each other any more, but judge ye this instead, not to place a stumbling block to the brother, or a snare.

1 Corinthians 1:23

but we proclaim Christ crucified, truly to Jews a stumbling-block and to Gentiles foolishness.

1 Corinthians 8:9

But take heed lest somehow this privilege of yours becomes a stumbling-block to those who are weak.

1 Corinthians 8:13

Therefore if food causes my brother to stumble, I will no, not eat meat into the age, so that I may not cause my brother to stumble.

1 Corinthians 10:32-33

Become ye inoffensive both to Jews and to Greeks, and to the church of God,

2 Corinthians 6:3

giving not one cause of stumbling in anything, so that the ministry may not be criticized,

Hebrews 12:13

and make straight paths for your feet, so that what is lame may not be turned away, but may be healed instead.

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 [in it].
Isaiah 40:3
The voice of a man crying out in the wilderness, Prepare ye the way of LORD, make straight 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 will be filled, and every mountain and hill will be brought low. And the crooked things will be into straight and the rough into smooth ways.

Take

Romans 14:13
Let us not therefore criticize each other any more, but judge ye this instead, not to place a stumbling block to the brother, or a snare.
1 Corinthians 1:23
but we proclaim Christ crucified, truly to Jews a stumbling-block and to Gentiles foolishness.
1 Corinthians 8:9
But take heed lest somehow this privilege of yours becomes a stumbling-block to those who are weak.
1 Corinthians 10:32
Become ye inoffensive both to Jews and to Greeks, and to the church of God,
2 Corinthians 6:3
giving not one cause of stumbling in anything, so that the ministry may not be criticized,
Hebrews 12:13
and make straight paths for your feet, so that what is lame may not be turned away, but may be healed instead.

General references

Deuteronomy 19:3
Thou shall prepare for thee the way, and divide the borders of thy land, which LORD thy God causes thee to inherit, into three parts, that every manslayer may flee there.
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.