If you go watch the Rabbi’s videos about Isaiah 53 you will see that it is the Jewish people who is the Suffering Servant.
The New Testament? The Good News is Fake News!
How do I know this?
Deuteronomy 4:2
לֹ֣א תֹסִ֗פוּ עַל־הַדָּבָר֙ אֲשֶׁ֤ר אָֽנֹכִי֙ מְצַוֶּ֣ה אֶתְכֶ֔ם וְלֹ֥א תִגְרְע֖וּ מִמֶּ֑נּוּ לִשְׁמֹ֗ר אֶת־מִצְוֹת֙ יְהֹוָ֣ה אֱלֹֽהֵיכֶ֔ם אֲשֶׁ֥ר אָֽנֹכִ֖י מְצַוֶּ֥ה אֶתְכֶֽם:
which translates as...
“Do not add to the word which I command you, nor diminish from it, to observe the commandments of the Lord your God which I command you.”
Isaiah was written after Deuteronomy.
So how do you know that Isaiah isn't adding to the word of God?
(Of course, I think both Isaiah and the New Testament are the Word of God.)
Secondly, while the Suffering Servant passage is commonly associated with Isaiah 53, it begins at the end of Isaiah 52. It’s also the fourth time Isaiah speaks of a servant (see Isaiah 42, 49, and 50). This passage is part of a larger whole.
“See, my servant will act wisely;
he will be raised and lifted up and highly exalted.
Just as there were many who were appalled at him—
his appearance was so disfigured beyond that of any human being
and his form marred beyond human likeness—
so he will sprinkle many nations,
and kings will shut their mouths because of him.
For what they were not told, they will see,
and what they have not heard, they will understand.
Who has believed our message
and to whom has the arm of the Lord been revealed?
He grew up before him like a tender shoot,
and like a root out of dry ground.
He had no beauty or majesty to attract us to him,
nothing in his appearance that we should desire him.
He was despised and rejected by mankind,
a man of suffering, and familiar with pain.
Like one from whom people hide their faces
he was despised, and we held him in low esteem.
Surely he took up our pain
and bore our suffering,
yet we considered him punished by God,
stricken by him, and afflicted.
But he was pierced for our transgressions,
he was crushed for our iniquities;
the punishment that brought us peace was on him,
and by his wounds we are healed.
We all, like sheep, have gone astray,
each of us has turned to our own way;
and the Lord has laid on him
the iniquity of us all.
He was oppressed and afflicted,
yet he did not open his mouth;
he was led like a lamb to the slaughter,
and as a sheep before its shearers is silent,
so he did not open his mouth.
By oppression and judgment he was taken away.
Yet who of his generation protested?
For he was cut off from the land of the living;
for the transgression of my people he was punished.
He was assigned a grave with the wicked,
and with the rich in his death,
though he had done no violence,
nor was any deceit in his mouth.
Yet it was the Lord’s will to crush him and cause him to suffer,
and though the Lord makes his life an offering for sin,
he will see his offspring and prolong his days,
and the will of the Lord will prosper in his hand.
After he has suffered,
he will see the light of life and be satisfied;
by his knowledge my righteous servant will justify many,
and he will bear their iniquities.
Therefore I will give him a portion among the great,
and he will divide the spoils with the strong,
because he poured out his life unto death,
and was numbered with the transgressors.
For he bore the sin of many,
and made intercession for the transgressors.” —Isaiah 52:13-53:12
You may have noticed that some of the descriptions of the suffering servant could apply to a leper, such as “his appearance was so disfigured beyond that of any human being and his form marred beyond human likeness” (Isaiah 52:14) and “he was despised and rejected by mankind, a man of suffering, and familiar with pain” (Isaiah 53:3).
But other descriptions seem to clearly portray a messiah figure, and they become problematic if we apply them to anyone besides Jesus.
God alone has the authority—and ability—to forgive sins. In fact, that’s one of the reasons the Pharisees and religious leaders had such a problem with Jesus: he claimed he had the authority to forgive sins (Matthew 9:1-8).
While the Suffering Servant doesn’t give us a picture of someone forgiving sins themself, it does tell us that the servant:
With the Suffering Servant, Isaiah paints a picture of a coming time when God will pour out the punishment for our sin on one individual—one who has been rejected by the world (Isaiah 53:3), and through whom people have been healed (Isaiah 53:5).
I'm sorry, but the Suffering servant is an individual, not the entire Rabbinical Jewish people