There are many modern writers who reduce the Christian message to something other than what it is. A friend gave me a book “The HEART of Christianity” by Marcus J. Borg. Unfortunately it is another variant of those who seek to put a modern face on an old religion.
Here is a link to a review of this book. [ http://imaginarydiocese.org/bishopjohn/files/2014/02/Jonathan-v-borg.pdf ]
Try this for a link to a really good book https://books.google.com.au/books/about/Present_Tense_Realities_Freedom_from_the.html?id=hZVRAwAAQBAJ&printsec=frontcover&source=kp_read_button&redir_esc=y#v=onepage&q&f=false