Another of Gillian's songs that i cant stop playing and thought i would tab for anyone 
wants it.

This one's in Standard tuning (as is mostly all of Gillian's songs)

Capo 5th Fret

  G
When I cross over
         D
I will shout and sing
         G                    D
I will know my savior by the mark
           C             G
Where the nails have been.

Chorus:
G
By the mark where the nails have been
        D                G
By the sign upon his precious skin
 G
I will know my savior when I come to him
         D              C          G
By the mark where the nails have been.


 G
A man of riches
      D
May claim a crown of jewels
         G
But the king of heaven
         D             C        G
Can be told from the prince of fools.


Chorus:
G
By the mark where the nails have been
        D                G
By the sign upon his precious skin
 G
I will know my savior when I come to him
         D              C          G
By the mark where the nails have been.

 G
On Calvary Mountain
             D
Where they made him suffer so
        G
All my sin was paid for
   D          C    G
A long, long time ago.

Chorus:
G
By the mark where the nails have been
        D                G
By the sign upon his precious skin
 G
I will know my savior when I come to him
         D              C          G
By the mark where the nails have been....

end on this wee lick -

e-----------------3-----------|
b-----------------3-----------|
g---------0-------0-----------|
D-----0h2---------0-----------|
A--0h2------------x-----------|
E-------------2---3-----------|

... and there you have it, really easy to play, also great if you are wanting to play 
sing it, no difficult chord changes.

As always email if you think theres something that should be fixed.