because i knew you i have been changed for good lyrics

Here are the lyrics to "For Good" from the musical Wicked, containing the phrase "Because I knew you, I have been changed for good": [GLINDA:]
I've heard it said,
That people come into our lives for a reason,
Bringing something we must learn,
And we are led to those who help us most to grow if we let them,
And we help them in return.
Well, I don't know if I believe that's true,
But I know I'm who I am today,
Because I knew you... Like a comet pulled from orbit
As it passes a sun,
Like a stream that meets a boulder
Halfway through the wood,
Who can say if I've been changed for the better?
But because I knew you
I have been changed for good. [ELPHABA:]
It well may be
That we will never meet again,
In this lifetime.
So let me say before we part,
So much of me
Is made of what I learned from you.
You'll be with me
Like a handprint on my heart. And now whatever way our stories end,
I know you have rewritten mine
By being my friend... Like a ship blown from its mooring
By a wind off the sea,
Like a seed dropped by a skybird
In a distant wood,
Who can say if I've been changed for the better?
But because I knew you... [GLINDA:]
Because I knew you... [BOTH:]
I have been changed for good. [ELPHABA:]
And just to clear the air,
I ask forgiveness
For the things I've done you blame me for. [GLINDA:]
But then, I guess we know
There's blame to share. [BOTH:]
And none of it seems to matter anymore. Like a comet pulled from orbit
(Like a ship blown from its mooring)
As it passes a sun
(By a wind off the sea)
Like a stream that meets a boulder
(Like a seed dropped by a bird)
Halfway through the wood
(In the wood)
Who can say if I've been changed for the better?
I do believe I have been changed for the better... [GLINDA:]
And because I knew you... [ELPHABA:]
Because I knew you... [BOTH:]
Because I knew you,
I have been changed...
For good. These lyrics express how both characters feel changed positively and forever because of knowing each other, reflecting themes of friendship and personal growth.