Mark adds the passage from Malachi. Matthew does not. Luke adds the following:
Every valley shall be filled
and every mountain and hill shall be made low.
The winding roads shall be made straight,
and the rough ways made smooth,
and all flesh shall see the salvation of God.
(Luke 3:5-6)
This is also from the 40th chapter of Isaiah, right after the line about making straight the way of the Lord. But to understand what is going on, we have to understand how the Book of Isaiah is constructed.
The Book of Isaiah is made up of two sub-books. The first 39 chapters are the āBook of Woesā where Isaiah says things such as:
For Jerusalem has stumbled, and Judah has fallen; because their speech and their deeds are against the LORD, defying his glorious presence. Their partiality witnesses against them; they proclaim their sin like Sodom, they do not hide it. Woe to them! For they have brought evil upon themselves. Tell the righteous that it shall be well with them, for they shall eat the fruit of their deeds. Woe to the wicked! It shall be ill with him, for what his hands have done shall be done to him. (Isaiah 3:8-11)
*
Woe to those who call evil good and good evil (Isaiah 5:20)
Woe to the rebellious children, (Isaiah 30:1)*
āWoe!ā was always a curse. āWoe to you!ā was like cursing someone. Isaiah, as the mouthpiece of God, is proclaiming Godās curse. But the 40th Chapter to the end is the sub-book called the book of consolation, where Isaiah proclaims mesages such as the following:
***for soon my salvation will come, and my deliverance be revealed. *
(Isaiah 56:1)
Where John the Baptist is drawing from is as important as the words he says. What the Pharisees, Saducces, chief priests and scribes always did was to condemn people. They demanded that sinners who did not obey the law of Moses seperate themselves from the righteous who Obeyed the Law of Moses. They never helped anyone, but only condemned. They proclaimed āWoe!ā to sinners.
John the Baptist starts immediately from the first lines of Isaiah 40, the first chapter in the Isaiahās Book of Consolation. John the Baptist proclaims salvation, straight from the opening lines of the Book of Consolation! This would have been noticeable to those who listened to him as Jews knew scripture very well. They would have said, āAha! See where he is preaching from!? This is Isaiah! This is the Book of Consolation!!!ā
Jesus himself reads from the Book of Consolation in the Synagogue. This is extremely important.
**
He came to Nazareth, where he had grown up, and went according to his custom into the synagogue on the sabbath day. He stood up to read and was handed a scroll of the prophet Isaiah. He unrolled the scroll and found the passage where it was written:
The Spirit of the Lord is upon me,
because he has anointed me
to bring glad tidings to the poor.
He has sent me to proclaim liberty to captives
and recovery of sight to the blind,
to let the oppressed go free,
and to proclaim a year acceptable to the Lord.ā
Rolling up the scroll, he handed it back to the attendant and sat down, and the eyes of all in the synagogue looked intently at him. He said to them, āToday this scripture passage is fulfilled in your hearing.ā And all spoke highly of him and were amazed at the gracious words that came from his mouth.**(Matthew 4:16-20)*
When we understand where Jesus (and John the Baptist) is quoting from, it is no wonder why the people speak highly of him and call his words gracious. Jesus is quoting from the Book of Consolationā¦
The spirit of the Lord GOD is upon me,
because the LORD has anointed me;
He has sent me to bring good news to the afflicted,
to bind up the brokenhearted,
To proclaim liberty to the captives,
release to the prisoners.
To announce a year of favor from the LORD
and a day of vindication by our God;
To comfort all who mourn
(Isaiah 61:1-2)
People were excited to hear these words. It was new and different. Instead of being condemned, and always having Isaiah 1 to 39 taught to them, someone was finally preaching consolation, freedom, vindication, liberty and comfort.
And notice how John preaches from the beginning of the Book of Consolation and Jesus preaches from the end of the Book of Consolation. John announces the beginning of consolation from the very first lines of the Book of Consolation and Jesus concludes it with a passage from near the end.
Now there was a man in Jerusalem whose name was Simeon. This man was righteous and devout, awaiting the consolation of Israel, and the holy Spirit was upon him. (Luke 2:25)
Luke is no dummy. Look at the notes in your Bible and it just might have a notation about what the word āConsolationā means with a reference to Isaiah 40 through 66. Luke is dropping hints to his readers, that the woes of Isaiah 1 to 39 are over and the consolation of Isaiah 40 through 66 is about to take place.
And Malachi 3:1-5 is about impending judgement. But it is also about purification and refining silver and gold so that it is acceptable to God. It is worth reading
here. And that is really Markās message. Judgement and purification, and consolation.
Itās as much about where in scripture this comes from as the words it says.
Maybe Mark just got it wrong. Who knows? But the Authors were telling their readers something definite, as were Jesus and John the Baptist, in where they chose to quote from.
-Tim-