Jesus spoke of his mandate to go to the cross and die as a “cup” that God his Father was making him drink.

If you just read the Gospels you would think that “cup” is just a metaphor for an unpleasant task God is making you do.

But if you read the prophets you realize that Jesus is drinking this cup instead of a whole bunch of other people:

Isaiah 51:

Wake yourself, wake yourself,
stand up, O Jerusalem,
you who have drunk from the hand of the LORD
the cup of his wrath,
who have drunk to the dregs
the bowl, the cup of staggering.
There is none to guide her
among all the sons she has borne;
there is none to take her by the hand
among all the sons she has brought up.
These two things have happened to you—
who will console you?—
devastation and destruction, famine and sword;
who will comfort you?
Your sons have fainted;
they lie at the head of every street
like an antelope in a net;
they are full of the wrath of the LORD,
the rebuke of your God.

Therefore hear this, you who are afflicted,
who are drunk, but not with wine:
Thus says your Lord, the LORD,
your God who pleads the cause of his people:
“Behold, I have taken from your hand the cup of staggering;
the bowl of my wrath you shall drink no more;
and I will put it into the hand of your tormentors,
who have said to you,
‘Bow down, that we may pass over’;
and you have made your back like the ground
and like the street for them to pass over.”

Jeremiah 25

Thus the LORD, the God of Israel, said to me: “Take from my hand this cup of the wine of wrath, and make all the nations to whom I send you drink it. They shall drink and stagger and be crazed because of the sword that I am sending among them.”

So I took the cup from the LORD’s hand, and made all the nations to whom the LORDsent me drink it: Jerusalem and the cities of Judah, its kings and officials, to make them a desolation and a waste, a hissing and a curse, as at this day; Pharaoh king of Egypt, his servants, his officials, all his people, and all the mixed tribes among them; all the kings of the land of Uz and all the kings of the land of the Philistines (Ashkelon, Gaza, Ekron, and the remnant of Ashdod); Edom, Moab, and the sons of Ammon; all the kings of Tyre, all the kings of Sidon, and the kings of the coastland across the sea; Dedan, Tema, Buz, and all who cut the corners of their hair; all the kings of Arabia and all the kings of the mixed tribes who dwell in the desert; all the kings of Zimri, all the kings of Elam, and all the kings of Media; all the kings of the north, far and near, one after another, and all the kingdoms of the world that are on the face of the earth. And after them the king of Babylon shall drink.

“Then you shall say to them, ‘Thus says the LORD of hosts, the God of Israel: Drink, be drunk and vomit, fall and rise no more, because of the sword that I am sending among you.’

“And if they refuse to accept the cup from your hand to drink, then you shall say to them, ‘Thus says the LORD of hosts: You must drink! For behold, I begin to work disaster at the city that is called by my name, and shall you go unpunished? You shall not go unpunished, for I am summoning a sword against all the inhabitants of the earth, declares the LORD of hosts.’

Ezekiel 23

“For thus says the LORD God: Behold, I will deliver you into the hands of those whom you hate, into the hands of those from whom you turned in disgust, and they shall deal with you in hatred and take away all the fruit of your labor and leave you naked and bare, and the nakedness of your whoring shall be uncovered. Your lewdness and your whoring have brought this upon you, because you played the whore with the nations and defiled yourself with their idols. You have gone the way of your sister; therefore I will give her cup into your hand. Thus says the LORD God:

“You shall drink your sister’s cup
that is deep and large;
you shall be laughed at and held in derision,
for it contains much;
you will be filled with drunkenness and sorrow.
A cup of horror and desolation,
the cup of your sister Samaria;
you shall drink it and drain it out,
and gnaw its shards,
and tear your breasts;

for I have spoken, declares the LORD God. Therefore thus says the LORD God: Because you have forgotten me and cast me behind your back, you yourself must bear the consequences of your lewdness and whoring.”

Zechariah 12

Behold, I am about to make Jerusalem a cup of staggering to all the surrounding peoples. The siege of Jerusalem will also be against Judah. On that day I will make Jerusalem a heavy stone for all the peoples. All who lift it will surely hurt themselves. And all the nations of the earth will gather against it. On that day, declares the LORD, I will strike every horse with panic, and its rider with madness. But for the sake of the house of Judah I will keep my eyes open, when I strike every horse of the peoples with blindness. Then the clans of Judah shall say to themselves, ‘The inhabitants of Jerusalem have strength through the LORD of hosts, their God

Whether it is for Jerusalem or for the other nations, the cup is always a national judgment. Furthermore, when Jerusalem had to drink it, the cup was death and destruction at the hands of foreign armies. Jesus drank up the curse of the covenant, dying at the hands of the Gentiles himself, and even in death being designated as an exile with the Imperial seal over his tomb.

Before he broke it and unleashed a river of life.