Luke 3:4

as it is written in the book of the words of Isaiah the prophet, saying: The voice of one crying in the wilderness, Make ready the way of the Lord, make his paths straight;

John 1:23

He said: I am the voice of one crying in the wilderness, Make straight the way of the Lord; as said the prophet Isaiah.

Matthew 3:3

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

Mark 1:3

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

Luke 1:16-17

And many of the sons of Israel shall he turn to the Lord their God.

Luke 1:76-79

And you, child, shall be called the prophet of the Most High; for you shall go before the face of the Lord, to make ready his ways,

John 1:7

This man came as a witness, to testify of the Light, that all through him might believe.

John 1:26-36

John answered them, saying: I immerse in water; but there stands one among you whom you know not.

John 3:28-36

You yourselves will testify for me, that I said, I am not the Christ, but that I am sent before him.

Treasury of Scripture Knowledge

Summary

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

General references

Bible References

The voice

Matthew 3:3
For this is he that was spoken of by Isaiah the prophet, saying: The voice of one crying in the wilderness, Prepare the way of the Lord, make his paths straight.
Mark 1:3
The voice of one crying in the wilderness, Make ready the way of the Lord, make his paths straight.
John 1:23
He said: I am the voice of one crying in the wilderness, Make straight the way of the Lord; as said the prophet Isaiah.

Prepare

Luke 1:16
And many of the sons of Israel shall he turn to the Lord their God.
John 1:7
This man came as a witness, to testify of the Light, that all through him might believe.
John 3:28
You yourselves will testify for me, that I said, I am not the Christ, but that I am sent before him.

General references

Mark 1:3
The voice of one crying in the wilderness, Make ready the way of the Lord, make his paths straight.