Mark 1:3

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

Matthew 3:3

For this is he that was spoken of by the prophet Isaiah, saying, The voice of one crying aloud in the wilderness, Prepare ye the way of the Lord, make his paths straight.

Luke 3:4-6

As it is written in the book of the words of the prophet Isaiah, saying, The voice of one crying aloud in the wilderness, Prepare ye the way of the Lord, make his paths straight.

John 1:15

John testified of him and cried, saying, This is he of whom I said, He that cometh after me is preferred before me, for he was before me.

John 3:28-36

Ye yourselves bear me witness that I said, I am not the Christ, but 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, to 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

Matthew 3:3
For this is he that was spoken of by the prophet Isaiah, saying, The voice of one crying aloud in the wilderness, Prepare ye the way of the Lord, make his paths straight.
Luke 3:4
As it is written in the book of the words of the prophet Isaiah, saying, The voice of one crying aloud in the wilderness, Prepare ye the way of the Lord, make his paths straight.
John 1:15
John testified of him and cried, saying, This is he of whom I said, He that cometh after me is preferred before me, for he was before me.
John 3:28
Ye yourselves bear me witness that I said, I am not the Christ, but I am sent before him.