Tota Pulchra es

A beautiful motet composed by Josquin des Prez in the 15th or 16th century. I can't quite make out the words, but I assume they are based on this fourth century prayer:

Tota pulchra es, Maria
et macula originalis non est in te.
Vestimentum tuum candidum quasi nix,
  et facies tua sicut sol.
Tota pulchra es, Maria,
et macula originalis non est in te.
Tu gloria Jerusalem,
  tu laetitia Israel,
  tu honorificentia populi nostri.
Tota pulchra es, Maria.

Thou art all fair, O Mary
and the original stain is not in thee.
Thy clothing is white like snow,
  and thy face is like the sun.
Thou art all fair, O Mary,
and the original stain is not in thee.
Thou, the glory of Jerusalem,
  thou, the joy of Israel,
  thou, the honor of our people.
Thou art all fair, O Mary.