The Attackers: Mandate to Walk in the Spirit, Not in the Flesh, Gal 5:16; the Doctrine of Walking: Introduction: Old Sin Nature v. the Holy Spirit, Gal 5:17; Walking in the Light: 1 John 1:67; Life as Unbeliever & Believer, Eph 5:810; the Professional Christian: Walking in Newness of Life; the System: the Protocol Plan