The shit is eternal, I rock the Heavens well
Even if they won't let me in Heaven
I raise hell, till it's Heaven

from Big L (Ft. Jay-Z) – Seven-Minute Freestyle Lyrics on Rap Genius

Double entendre: He’s also saying that, if he isn’t admitted into Heaven and is sent to Hell when he dies (probably because of his criminality), he’s strong enough to literally RAISE Hell (underworld) until it’s a paradise in the clouds. There, he will rock the Heavens for eternity.

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