Flesh
as it it used here,
comes from a Greek word meaning,


The body (as opposed to the soul or spirit); human nature, with its physical and moral
frailities and passions;
a human being.

This I say then, Walk in the Spirit,
and ye shall not fulfill
the lust of the flesh.
For the flesh lusteth against the Spirit,
and the Spirit against the flesh:
and these are contrary the one to the other: so that ye cannot do
the things that ye would.
But if ye be led of the Spirit,
ye are not under the law.

Galatians
5:16-18