A recent post on the Gospel Coalition website by Trevin Wax gave a helpful review of my book Possessed by God and evaluated the pastoral implications of seeing sanctification primarily as a position, rather than as a process. (thegospelcoalition.org/blogs/trevinwax/2014/08/19/is-sanctification-a-process-or-a-position). Although the book has been published for almost 20 years, it has surprised me that little public discussion on the topic has taken place (with some notable exceptions). Apart from the pastoral implications, the thesis raises important questions about the relationship between Biblical Theology and Systematic Theology. I am regularly challenged about these issues by students in my classes!