"PONDER NOTHING EARTHLY-MINDED"

From the "songs stuck in my head during on-call department":

Let all mortal flesh keep silence, and with fear and trembling stand
Ponder nothing earthly-minded, for with blessing in his hand
Christ our God to earth descendeth, our full homage to demand.

King of kings, yet born of Mary, as of old on earth he stood
Lord of lords in human vesture, in the body and the blood
He will give to all the faithful his own self for heav'nly food.

Rank on rank the host of heaven spreads it vanguard on the way
As the Light of light descending, from the realms of endless day,
Comes the powers of hell to vanquish, as the darkness clears away.

At his feet the six-winged seraph, cherubim with sleepless eye
Veil their faces to the presence, as with ceaseless voice they cry:
Alleluia! Alleluia! Alleluia, Lord most high!