This song is fairly simple but tricky. If you listen to the song you'll pick it up pretty quick.

Intro: Bm, A 4x

Verse 1:
Bm      A           Bm         A
Deep in prayer, my cross to bear
  Bm      A       Bm     A
I kneel upon the floor
Bm          A      Bm        A
Temptations of a Catholic priest aren't
Bm    A Bm     A
Easy to ignore

Bridge 1:
    G      D     A
And when I can't control myself
   G       D    A
It rips my soul apart
    G         D       A
For one small sheep among my flock has
G          D         A 
Stole this shepherds heart

Chorus 1:
G     A    Bm
Alter boy, alter boy
G            A       D 
Confess your sins to me
G        A        Bm
You will find the grace of God
G         A  Bm    A 
Inside my rectory

Repeat intro 3x.

That's it. Just listen to the song and use the same chords for the rest.