I interpreted “is” as a life in the present moment and “was” represented past behaviors. Change of temporal form probably intentionally. The best way to develop knowledge is to bypass other assessments and read the material and develop one`s own knowledge. As I also replay topics in the reference, I think we all receive something different from each book, based on completely different emotional reactions, based on observations from a group that read all four chords at the same time. There were about fifty of them, and I recommended to a brother and sister who had childhood trauma. He read the first chapters in tears, but he understood the healing force itself. The first one only annoyed me, but I understood that he drew why we should not believe like that. Be blameless with your word. Don`t take anything personally.