of the flesh; not spiritual; sensual; opposed to spiritual; also, unregenerated; in the natural state; unsaved.

For though we walk in the flesh, we do not war after the flesh: (for the weapons of our warfare are not carnal, but mighty through God to the pulling down of strong holds;) Casting down imaginations, and every high thing that exalteth itself against the knowlege of God, and bringing into captivity every thought to the obedience of Christ...
2 Corinthians 10:3-5