Dan Gallagher of Spirit & Truth Fellowship International (http://www.stfonline.org) teaches on "Our Power in the Spiritual Battle."

For further study see:

Is God in Control of Everything That Happens?
http://www.TruthOrTradition.com/control

Articles, videos, and audio teachings on the spiritual battle
http://www.TruthOrTradition.com/battle

A New Holy Spirit: The Power to be like Christ
http://www.TruthOrTradition.com/power

Walking in Power: The Manifestations of Holy Spirit
http://www.TruthOrTradition.com/manifestations

Prayer Matters
http://www.TruthOrTradition.com/prayermatters

Discipleship Basics: The core fundamental disciplines and practices of every Christian http://www.TruthOrTradition.com/basics

Luke 24:49, Acts 4:33, Romans 10:17, Ephesians 1:19-20, 1 John 5:2-4 and 1 John 5:19