"St. Isaac the Syrian’s homily 44 is one of his several very difficult homilies. It is difficult not because it is hard to understand. Exactly the opposite is the case. It is quite straight forward and easy to understand. I understand it, and I am offended by it."
Here is a link to the book that Fr. Michael mentions at the end of this blog: http://www.orthodoxchristianebooks.com/grace-of-incorruption