'Flesh' in the Bible

Even as Sodom and Gomorrah, and the cities around them, having, in the same way as these, given themselves over to sexual immorality and gone after strange flesh, are set forth as an example, suffering the punishment of eternal fire.

Yet in the same way, these also in their dreaming defile the flesh, despise authority, and slander celestial beings.

and some save, snatching them out of the fire with fear, hating even the clothing stained by the flesh.