'Flesh' in the Bible

because all that is in the world -- the desire of the flesh, and the desire of the eyes, and the ostentation of the life -- is not of the Father, but of the world,

in this know ye the Spirit of God; every spirit that doth confess Jesus Christ in the flesh having come, of God it is,

and every spirit that doth not confess Jesus Christ in the flesh having come, of God it is not; and this is that of the antichrist, which ye heard that it doth come, and now in the world it is already.