Define Rap God Meaning

The very next day, "Hey Fab, I'ma kill you!"
Lyrics comin' at you at supersonic speed (J.J. Fad)
Uh, summa-lumma, dooma-lumma, you assumin' I'm a human
What I gotta do to get it through to you I'm superhuman?
Innovative and I'm made of rubber
So that anything you say is ricochetin' off of me
And it'll glue to you and
I'm devastating, more than ever demonstrating
How to give a motherfuckin' audience
A feeling like it's levitating
Never fading, and I know the haters are forever waiting
For the day that they can say I fell off, they'll be celebrating
'Cause I know the way to get 'em motivated
I make elevating music, you make elevator music

when your rapping LIKE A GOD

A God named Eminem who decided to say "Uh, sama lamaa duma lamaa you assuming I'm a human
What I gotta do to get it through to you I'm superhuman
Innovative and I'm made of rubber
So that anything you saying ricocheting off of me and it'll glue to you
I'm never stating, more than never demonstrating
How to give a motherfuckin' audience a feeling like it's levitating
Never fading, and I know that the haters are forever waiting
For the day that they can say I fell off, they'd be celebrating
Cause I know the way to get 'em motivated" and become a Rap God, even though he already was.

A rapper who is seen as the best in the game and is superior to all other rappers. A rapper that will be a legend.

Seo Changbin from Stray Kids