First of all, let me say that this book was first published in 1921 according to the Amazon description. You can tell that the language is older and somewhat hard to read, but if you get over that and really take your time reading it there are tons of hidden gems all throughout the book. Her writing style is dense and not the most fluid, but the content is so very rich and extensive. I consider myself a fast reader, but this book took me almost a year to read, as I had to read a chapter and slowly and let it soak in. Definitely do not go into it thinking you can breeze through it. It's much easier to approach it how she has it set up as 100 lessons.
I have read a lot of books on women and equality in the church and so far, this is by far the most extensive, well researched, broadest context and richest arguments I have encountered. Yes, she goes over the usual subjects of translation for all the passages in the Bible involving women, but she dives much much deeper, going extremely far into cultural context and historical chronology. Besides the thankfully more and more, well-known translation issues addressed, Katharine Bushnell has many many more points, arguments and analysis that in my circle have not been brought up and addressed yet. So if you're looking for more and going beyond the usual equality arguments, this book is a phenomenal resource for countless issues and arguments involving women and their relationship to God.
Finally, this book is life-changing in that it has the capability to remove all doubts in regards to women's full equality and their place in God's plan. It is not about seeking status in the church, but creating a richer fuller understanding of the heart of God for women apart from cultural stigma and roles. This book, without a doubt, strengthed my relationship with Christ in an inexplicable way. I would highly recommend it, but go into it patiently taking your time.