This is tabbed in the key of G major. Transpose how ever you like. I started playing it 
G major and it worked. The chord changes may be off just a little bit, but it's close enough.

Verse 1
G (320003@1)                     C (x32010@1)         GTempted (320003@1)and tried we're oft made to wonder
G (320003@1)                   A (x02220@1)         DWhy (xx0232@1)it should be thus all the day long
G (320003@1)                    C (x32010@1)    GWhile (320003@1)there are others living about us
G (320003@1)            D (xx0232@1)           GNever (320003@1)molested though in the wrong

Chorus
G (320003@1)                 C (x32010@1)       GFarther (320003@1)along we'll know all about it
G (320003@1)                 A (x02220@1)        DFarther (xx0232@1)along we'll understand why
G (320003@1)                 C (x32010@1)         GCheer (320003@1)up my brother live in the sunshine
G (320003@1)                 D (xx0232@1)        GWe'll (320003@1)understand it all by and by

Verse 2
G (320003@1)                     C (x32010@1)       GWhen (320003@1)death has come and taken our loved ones
G (320003@1)                   A (x02220@1)        DIt (xx0232@1)leaves our home so lonely and drear
G (320003@1)               C (x32010@1)        GThen (320003@1)do we wonder why others prosper
G (320003@1)              D (xx0232@1)        GLiving (320003@1)so wicked year after year

Chorus

Verse 3
G (320003@1)               C (x32010@1)       GWhen (320003@1)we see Jesus coming in Glory
G (320003@1)                    A (x02220@1)         DWhen (xx0232@1)He comes from His home in the sky
G (320003@1)                    C (x32010@1)            GThen (320003@1)we shall meet Him in that bright mansion
G (320003@1)                 D (xx0232@1)        GWe'll (320003@1)understand it all by and by

Chorus