General idea for picking pattern: 
E----------------------------- 
B--------1-----------1-------- 
G------0---0-------0---0------ 
D----2-------2---2-------2---- 
A--3-----------3-------------- 
E----------------------------

Intro: C5 
 
C5                 F5                   C5 
O holy night, the stars are brightly shining 
                       G5              C5 
It is the night of our dear Saviour's birth 
C5                     F5              C5 
Long lay the world in sin and error pining 
         E5             B5            E5 
Til He appeared and the soul felt its worth 
  G5                  C5 
A thrill of hope the weary world rejoices 
   G5                C5 
For yonder breaks, a new and glorious morn 
A5            E5       D5             A5 
Fall on your knees, oh hear the angel voices 
  C5  G5    C5  F5 
O night divine 
  C5   G5                C5 
O night when Christ was born 
  G5       C5 D5   C5    G5           C5 
O night, O holy night, O night divine