One day, Simba, the sun will set on my time here, and will rise upon you as the new king
And this will all be mine?
EVERYTHING
Everything the light touches

from J. Cole – Return Of Simba Lyrics on Rap Genius

Meaning

Cole realizes the power of The Lion King as allegory; Mufasa — representing Jay-Z — won’t be around forever. So he needs his heir (J.Cole/Simba) to take over the Pridelands/Rap game when he is gone

To quote Warren G:

Watching the Lion King
Crying and thangs..

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