With there is no hate, and you don't need flesh

from Flatbush Zombies – Face-Off (L.S.Darko) Lyrics on Rap Genius

Meaning

Zombies love to eat flesh.

He is referring to another plane of existence or consciousness outside of normal reality, carrying on from the last line. You don’t need flesh, it is consciousness not limited to being in the human body, outside of the normal rules of reality. Related to ego death, elevated consciousness etc.
There is no hate, only unity and peace.

He may be talking about when you die you go to a peaceful place and leave your physical body resulting in no need for flesh

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