The search for "knocking" delivered 3 verses in 3 songs on 3 records.
The dragon searched for the following: "knocking" as keywords
Here are the matching verses:
Dio: Master Of The Moon
8. I Am
I think I'm through with just pretending
Knocking at the door that I've been through before
Congratulations, at last you've seen my light
Now it's you against the night
I think I'm never coming after, after all
Now I've become the cat who always lets you know that
I am, I am, stronger than the wind
I am, I am sin
I am, I am, stronger without you
I am
Dio: Strange Highways
10. Here's to you
All for one, it's one for all
Now you can pull the trigger
As we're knocking down on the wall
When you finally shoot too high
The lie will always bring it down
Rainbow: Long Live Rock 'N' Roll
7. Sensitive To Light
She's knockin' at the door
Seems to want some more
Never gets the clue
What am I to do she'll fall
And she might call, oh no
She's a bright and shining star
But I just must be sensitive to light
Oh, I just know