Most Christians think like humanists — not on purpose, mind you, but because they have never been trained to “take every thought captive to the obedience of Christ” by trusting in Scripture as the basis of their worldview. The results are devastating. Double-minded Christians dominate our churches. They have one foot in the world and one foot in the Church. They look to the Bible when it is convenient, but assume it is silent on most issues, rather than regarding it as “sufficient for all of faith and practice.” This lecture presents an overview of what is needed to reform our minds.