I haven't listened to the entire song and haven't heard it before now, but here is the itune version, I'm assuming it's the original in key of Gb and basics of both youtube version, just different keys (first version started in key of Bb and second in Eb)...they may have used different passing chords or alternate progressions to get to the chords in the basic progression, but still the same...I only listened to the first verse, I'm assuming the rest follows somewhat close to this, hope this helps.
Lord I Love You
iTune version
Key of Gb
/Gb - Lord
/Ab - I
Gb/Db-Gb-Bb - Love you
F/Db-F-Ab
Eb/Db-Gb-Bb
Db/
C/Bb-Eb-Gb - Yes I
Db/Db-Eb-F-Ab - Love You
/F -> Gb(usually Db in bass)/B-Eb-E-Ab
Gb/Bb-Eb-E-Ab - How I
B/Bb-Db-Eb-Gb - Love You
Db/
Eb/Gb-B-Eb-Gb
F/B-Db-F-Ab - I really
Gb/Ab-Bb-Db-Gb - Love you
(2-5-1 again back to top)
Ab/Ab-B-Eb-Gb
Db/Ab-B-Db-F
Gb/Ab-Bb-Db-Gb
Lord I Love You
First Youtube version - (a little different on the bass notes/chords, but same basic progression)
Key of Bb
/Bb - Lord
/C - I
Bb/F-Bb-D - Love You
A/F-A-C
G/F-Bb-D
E/E-G-Bb-D or E/E-G-C - Yes I
F/F-A-C - Love You
Eb/
D/D-F#-A-C
...- How I
C/Eb-G-Bb - Love you
G/Eb-G-Bb - ...
... - I
A/F-A-C - really
Bb/D-F-Bb
(2-5-1 in Bb to get back to top)
C to F to Bb bass
Lord I Love You
Second Youtube version - (Different chords/variation on progrssion, but the basics are still present, just in a different key)
Key of Eb
/Eb - Lord
/F - I
Eb/Bb-D-F-G - Love You
Db/G-B-Db-F
C/G-B-C#-E
A/A-C-Eb-G - How I
Bb/Bb-C-D-F - Love You
... - Yes I
Ab/G-Bb-C-Eb - Love You
Bb/Ab-Bb-C-Eb
... - I really
Eb/F-Bb-Eb - Love You
(2-5-1 in Eb to get back to top)
F to Bb to Eb bass