In my Hindu family's grand tradition of not ignoring the elephant so obviously in the room, a very happy Christmas. With it, a very favorite (and familiar, I guess) chant/poem:

Veni, veni Emmanuel,
Captivum solve Israel,
Qui gemit in exilio
Privatus Dei Filio.

Refrain:
Gaude, gaude! Emmanuel
nascetur pro te, Israel.

Veni, o Jesse Virgula;
Ex hostis tuos ungula,
De specu tuos tartari
Deduc et antro barathri.
Refrain.

Veni, veni, o Oriens
Solare nos adveniens;
Noctis depele nebulas
Dirasque noctis tenebras.
Refrain.

Veni clavis Davidica;
Regna reclude caelica;
Fac iter tutum superum,
Et claude vias inferum.
Refrain.

Veni, veni Adonai,
Qui populo in Sinai
Legem dedisti vertice,
In majestate gloriae.
Refrain.

That is to say:

O come, O come Emmanuel,
And ransom captive Israel,
That mourns in lonely exile here,
Until the Son of God appear.

Refrain:
Rejoice! Rejoice! Emmanuel
Shall come to thee, O Israel!

Oh, come, oh, come, great Lord of might,
Who to Thy tribes on Sinai's height
In Ancient times once gave the law
In cloud, and majesty and awe.
Refrain.

Oh, come, strong branch of Jesse, free
Thine own from Satans tyranny;
From depths of hell Thy people save
And give them vict'ry o'er the grave.
Refrain.

Oh, come, Thou Key of David, come
And open wide our heavenly home:
Make safe the way that leads on high
And close the path to misery.
Refrain.

O Come Thou Dayspring, from on high
And cheer us by Thy drawing nigh;
Disperse the gloomy clouds of night,
And death's dark shadows put to flight.
Refrain.

O come, Thou Wisdom from on high,
And order all things, far and nigh;
To us the path of knowledge show,
And cause us in her ways to go.
Refrain.

O come desire of nations, bind
All peoples in one heart and mind;
Bid envy, strife, and quarrels cease;
Fill the whole world with heaven's peace.
Refrain.