Mike our job is simple:
Rom 8:14 For as many as are led by the Spirit of God, they are the sons of God.
Gal 5:16 This I say then, Walk in the Spirit, and ye shall not fulfil the lust of the flesh.
If we are led and empowered by the Spirit of God then Satan will hold no sway in our lives. As we surrender our lives and follow the Holy Ghost we will be used of God to build His Kingdom, to share the good news, to deliver others from darkness and whatever else He leads us into. A spirit filled man with the Word of God on His lips and in his heart can pull down any mountain. Such a man can walk with the full authority of Jesus Christ Himself and become a living expression of the Father's will. Such a man becomes the hands, the feet and the heart of love which is the manifest power of Christ as he walks according to the Spirit's lead.
Joh 14:12 Verily, verily, I say unto you, He that believeth on me, the works that I do shall he do also; and greater works than these shall he do; because I go unto my Father.