So even when the mumblers talk
I still walk the most humblest walk

from Clipse (Ft. Bilal) – Nightmares Lyrics on Rap Genius

Meaning

Malice uses the word ‘mumblers’ to refer to the jealous people around him, who are too cowardly to take up their issues with him directly. He uses the word ‘humble’ as a synonym for caution. In other words, even when the people who are usually too cowardly to say anything to him whisper behind his back, he treats the situation with extreme caution

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