In this farewell
There’s no blood
There’s no alibi
‘Cause I’ve drawn regret
From the truth
Of a thousand lies

So let mercy come
And wash away
What I’ve done

I'll face myself
To cross out what i’ve become
Erase myself
And let go of what i’ve done

Put to rest
What you thought of me
While I clean this slate
With the hands of uncertainty

So let mercy come
And wash away
What I’ve done

I'll face myself
To cross out what i’ve become
Erase myself
And let go of what i’ve done

For what I’ve done
I start again
And whatever pain may come
Today this ends
I’m forgiving what I’ve done!!!

I'll face myself
To cross out what i’ve become
Erase myself
And let go of what i’ve done

What I’ve done
Forgiving what I’ve done

Lyrics of "What I've Done" by Linkin Park

I'm feeling disturbed and guilty, and I just need mercy come and wash away what I've done. I need to first forgive what I've done, shake the shackles of guilt off myself, and seek God for His forgiveness and reconciliation.

Note: I know I should have chosen a "Christian song" to express my feelings, but I think this song has more than appropriately described my feelings. And other than the lyrics, the music arrangement resonates my struggles too.