Theological training and study can be dangerous. There are many pitfalls. In this chapter the authors introduce possible dangers of theological studies.

What is a biblical understanding of sanctification? The author explains that Scripture talks about sanctification in two different ways, definitive sanctification and progressive sanctification. He further warns against cheap slogans that communicate unhelpful and even misleading understandings of sanctification. He continues with a discussion of the centrality of union with Christ in believers’ sanctification.