It may be on the longer side, but the meaning of Holy Week has never been expressed more beautifully. From the second of his Four Quartets (1943):

You say I am repeating
Something I have said before. I shall say it again.
Shall I say it again? In order to arrive there,
To arrive where you are, to get from where you are not,
You must go by a way wherein there is no ecstasy.
In order to arrive at what you do not know
You must go by a way which is the way of ignorance.
In order to possess what you do not possess
You must go by the way of dispossession.
In order to arrive at what you are not
You must go through the way in which you are not.
And what you do not know is the only thing you know
And what you own is what you do not own
And where your are is where you are not.

The wounded surgeon plies the steel
That questions the distempered part;
Beneath the bleeding hands we feel
The sharp compassion of the healer’s art
Resolving the enigma of the fever chart.

Our only health is the disease
If we obey the dying nurse
Whose constant care is not to please
But to remind of our, and Adam’s curse,
And that, to be restored, our sickness must grow worse.

The whole earth is our hospital
Endowed by the ruined millionaire,
Wherein, if we do well, we shall
Die of the absolute paternal care
That will not leave us, but prevents us everywhere.

The chill ascends from feet to knees,
The fever sings in mental wires.
If to be warmed, then I must freeze
And quake in frigid purgatorial fires
Of which the flame is roses, and the smoke is briars.

The dripping blood our only drink,
The bloody flesh our only food:
In spite of which we like to think
That we are sound, substantial flesh and blood –
Again, in spite of that, we call this Friday good.