Mark 1:3

A voice of him crying in the desert, Prepare ye the way of the Lord; make his beaten paths straight.

Isaiah 40:3-5

The voice of him calling in the desert, Prepare ye the way of Jehovah, make straight in the sterile region a highway for our God.

Matthew 3:3

For this is he spoken of by the prophet Esaias, saying, A voice of him crying in the desert, Prepare the way of the Lord; make his paths straight.

Luke 3:4-6

As it has been written in the book of the words of Esaias the prophet, saying, A voice of him crying in the desert, Prepare ye the way of the Lord, make his footpaths straight.

John 1:15

John testifies for him, and he tried, saying, This was he of whom I said, He coming after me was before me: for he was before me.

John 3:28-36

Ye yourselves testify to me, that I said, I am not the Christ, but that I am sent before him.

John 1:19-34

And this is the testimony of John, when the Jews sent priests and Levites from Jerusalem that they might ask him, Who art thou?

Treasury of Scripture Knowledge

Summary

The voice of one crying in the wilderness, Prepare ye the way of the Lord, make his paths straight.

Bible References

General references

Isaiah 40:3
The voice of him calling in the desert, Prepare ye the way of Jehovah, make straight in the sterile region a highway for our God.
Matthew 3:3
For this is he spoken of by the prophet Esaias, saying, A voice of him crying in the desert, Prepare the way of the Lord; make his paths straight.
Luke 3:4
As it has been written in the book of the words of Esaias the prophet, saying, A voice of him crying in the desert, Prepare ye the way of the Lord, make his footpaths straight.
John 1:15
John testifies for him, and he tried, saying, This was he of whom I said, He coming after me was before me: for he was before me.
John 3:28
Ye yourselves testify to me, that I said, I am not the Christ, but that I am sent before him.