This was a great book that really illustrates where Schwenckfeld and Lutherans differed on very important issues. I identify with Schwenckfeld in much of his theology, but there are a few things I don't agree with. His focus on the necessity of Christ and the Holy Spirit, I very strongly support; his Donatist tendencies I do take issue with. Schwenckfeld seemed to hold that either a Christan has the Spirit and is infallibly righteous, or fallibly righteous and doesn't have the Spirit at all and is thus not a Christian; or worse, a false Christian. This is a very simplistic view of Christian regeneration in my opinion and is really a false dichotomy. Regeneration is often a process with many ups and downs until Spiritual maturity is attained. Schwenckfeld doesn't really give proper attention to the reality that Christians may mature at different rates; and that more perfect righteousness is often attained in stages rather than all at once with the conversion experience. This is the biggest problem I have with Schwenckfeld. I largely agree with everything else in here. On that issue I would have to side with Lutherans who had a better appreciation for human, including Christian, fallibility.