Johnny Cash - Unchained lyrics

I have been ungrateful And I have been unwise Restless from the cradle But now I realize It's so hard to see the rainbow Through gla**es dark as these Maybe I'll be able From down on my knees Oh I am weak Oh I know I am vain Take this weight from me Let my spirit be unchained Old man swearin' at the sidewalk And I am overcome Seems that we've both forgotten Forgotten to go home Have I seen an angel Or have I seen a ghost Where's that rock of ages When you need it most It's so hard to see the rainbow Through gla**es dark as these Maybe I'll be able From down on my knees