The novel The Shack never cites this passage specifically, but it's arguably at the heart of the book: that relationship is at the heart of how we are called to be, that we must be in loving relationship God (God who is Trinitarian because God's essence is Love and love cannot exist outside of relationship) and that all our other relationships must be rooted in that model of relationship.
This isn't new(s) to me, so I wasn't blown away by the book like some people have been. Plus there were a variety of little things that just didn't quite work for me.
