I totally love this song, and after a lot of practicing, i finally have "By God" figured 
Some parts are pretty tricky, but most of it shouldn't be too hard.

Intro:
"Yee-Haw!"
Eb_________________________________________________
Bb_________________________________________________
Gb_________________________________________________
Db_1_2_3_2_3_4_3_4_5_4_5_6_5_6_7_6_7_8_7_8_________ 1x
Ab_1_2_3_2_3_4_3_4_5_4_5_6_5_6_7_6_7_8_7_8_________
Db_1_2_3_2_3_4_3_4_5_4_5_6_5_6_7_6_7_8_7_8_________

Intro 2/Verse:
"By God!"
Eb_____________________
Bb_____________________
Gb_______5-____________     (- = slight wammy)
Db_0_0_0_______________ 4x  (All "0's" in this part are to be palm muted)
Ab_0_0_0_______________
Db_0_0_0_______________

Verse (part 2):
"I lay me down let it rise up in my soul..."
Eb___________________
Bb___________________
Gb___________________
Db_6_0_0_0_6_0_0_0___ 8x
Ab_6_0_0_0_6_0_0_0___
Db_6_0_0_0_6_0_0_0___

Verse (part 3):
"Oh God, without you i can do nothing..."
Eb_______________
Bb_______________
Gb_______________
Db_4_4_0_4__4____ 4x
Ab_4_4_0_4_______
Db_4_4_0_4_______

Pre-Chorus:
"It should've been my hands, it should've been my cross..."
Eb______________]____
Bb___________2x_]____
Gb______________]_7__     (Note: The bracets do not set an end for a tab,
Db_0_2_5_2__(3x)]_7__(1x) they represent shortening a tab line. The "(3x)"
Ab_0_2_5_2______]_5__     indicates how many times you play that part, then
Db_0_2_5_2______]____     play the "577" once. The "2x" above the "(3x)"
                          indicates to play that part  twice not including
                          the one time "577". Continue to "Chorus:")

Chorus (part 2):
"Oh yeah, its not about me but by grace i was saved by God."
Eb__________]___________3___
Bb__________]__________3_3__
Gb__________]_________2___0_
Db_7_3_(1x)_]_0_0_0_0_______ 4x
Ab_7_3______]_0_0_0_0_______
Db_7_3______]_0_0_0_0 ______

Solo:
Eb____________10_12_10_13_10_12_10_/_13_12_10____________________________
Bb__3________________________________________13_11_10____________________
Gb___________________________________________________12_10_______________ 1x
Db________________________________________________________12_10___10_12-_
Ab_____________________________________________________________10________
Db_______________________________________________________________________
(Note: Pick up speed after the "/" and slightly wammy the final "12")

Rhythym used in solo:
Eb_________________________
Bb_________________________
Gb_________________________
Db_0_0_7_3_0_0_7_3_________ 8x
Ab_0_0_7_3_0_0_7_3_________
Db_0_0_7_3_0_0_7_3_________

Ending:
Eb_________________________
Bb_________________________
Gb_________________________
Db_0_0_7_3_________________ 4x
Ab_0_0_7_3_________________
Db_0_0_7_3_________________


There are some effects i don't know, but i can almost guarentee this is 100 percent 
Enjoy! You can figure out the way the order of the song goes.