“Mine” is clearly about the temptation of Satan and how if you give into temptation, it’s technically your fault, and you have no one else to blame but yourself, which is what the narrator (possibly Satan himself) is saying this song.
I am the one
I'll liberate you
I can black out the sun
With my temptation
Knowing that I exist
Just drives me further
To the edge of a bliss I've never known
Waste
Leave you broken, crawling over what remains
Make you, break you into what I feed on
I am the one
I'll recreate you
With a mind of your own
To my own liking
I can feel what you think
When you're not looking
I can break down the walls
And watch it all
Waste
Leave you broken, crawling over what remains
Make you, break you into what I feed on
You made me come
You brought me here
It's your fault
Your fault that you're mine
You made me come
You brought me here
It's your fault
Your fault that you're mine
I'll make you blind to what you see
You made me come
You brought me here
It's your fault
Your fault that you're mine
You made me come
You brought me here
It's your fault
Your fault that you're mine