Bridge over troubled waters

Rather puzzlingly this is not in either of our songbooks! Sorry about that...

When you're weary, feeling small
When tears are in your eyes, I will dry them all
I'm on your side when times get rough
And friends just can't be found

(chorus) Like a bridge over troubled waters
I will lay me down (repeat)

When you're down & out, when you're on the street
When evening falls so hard I will comfort you
I'll take your part when darkness comes
And pain is all around

Sail on silver girl, sail on by
Your time has come to shine, all your dreams are on their way
See how they shine, oh if you need a friend
I'm sailing right behind