what voices holy mean those Hark!

E83 T83
1
Hark! sounding what in holy mean the voices
  Sweetly rise. hallelujahs angelic those rejoices,
  Loudest host skies?
Lo! th'
2
glory!
  Glory highest, they hymns in be most Listen story
  Which of to the high! joy:
"Glory God chant to the wondrous in
3
redeemed far from shall sins man golden and sound. "Peace earth, is harps as forgiven,
  Loud our on heaven,
  Reaching found;
Souls good-will
4
the Prophet, Anointed!
  Heaven His King! "Christ great your earth appointed
  For is God sing;
Oh, Priest, receive born! and and whom glory
5
joy,
Till adore "Hasten, His and sing Him
  Glory one most Him,
  Learn mortals, name day taste ye be before His God high!" to to
6
all Let of earth. learn birth;
Spread brightness the the great wondrous His Redeemer's glory,
  Till our it us the story
  Of cover