George Macdonald writes beautifully, some of these are absolutely the best I've ever seen. While acknowledging his words will always fall short of capturing the truth of Love, the way he yearns to paint Christ--orchestrating 4-5 pages on one or two verses--gave me a glimpse of what Jeremiah 33:3 is about.
I suspect the reason he isn't well known has to do with his difficult writing, some of which required reading two or three times over to grasp its meaning fully.
That being said, however, I did find some of his theology to be on the curious side, as in--based more on his intellectual wishful thinking than on plain Scripture? Let me clarify. He did get a lot of mileage out of a single verse, sometimes two, much of which seemed to me to come only from one whose insight is gained after Christ as inspiration. But for some aspects of doctrine, he seems to have confused his own internal voice for meaning that contradicts the analogy of the Bible (this includes the parable of the weeds, the fishnet, the sheep and the goats, etc) in his explanation supporting universalism. I.e., he entirely dismissed or changed the meaning of the words "eternal" and "everlasting" in order to accommodate his idea that, once the punishment of the sinner (the vision of himself) takes effect in hell, he then begins to grow into redemption...in hell, yeah...
In other places, he advocates for the rejection of any action from God that seems to us to be morally appalling. In short, if the action seems illegitimate because it violates our ineluctable moral compass, then God could not have performed it. To me, this means I have to doubt Scripture instead of submitting myself to some texts I might not be able to understand on this side of Grace (See God's response to Job). And to be fair, he does (sort of) concede to the latter:
"I acknowledge no authority calling upon me to believe a thing of God, which I could not be a man and believe right in my fellow-man. I will accept no explanation of any way of God which explanation involves what I should scorn as false and unfair in a man ... If it be said that God does a thing, and the thing seems to be unjust, then either I do not know what the thing is, or God does not do it. The saying cannot mean what it seems to mean, or the saying is not true."
I appreciate his voiced reluctance to put forth yet another doctrine in place of the ones he vehemently objected to. Though I disagree with his universalism ideas, however beautifully he wrote them without naming it a doctrine per se, I agree with the point he tried to emphasize the most throughout: that faith and obedience are indisputably tied, and those professing the Christian faith should focus more on following the steps of Jesus outside than arguing about the semantics of doctrine in their enclosed, exclusive religious temples.
Some of the reviews I read here reflect my feelings on some sermons, so I included them below:
"The part that was the most troubling to me was the section entitled 'Justice.' He writes very strongly against the idea of substitutionary atonement, but, as far as I could tell, he doen't give anything in the way of biblical justification for rejecting this doctrine. Since his position requires the reinterpretation (if not outright rejection) of large portions of Scripture you'd expect him to have more of a justification than the fact that is seems wrong to him ... He just called the idea a lie and left it at that."
"On one hand, MacDonald's command of the English language is on full display ... Unfortunately, so are some of his more heterodox positions. That said, when he's 'on' theologically, he's very much 'on.' The best example of this is, I think, the chapter on Forgiveness. One minute, he's thundering about the glory of the Gospel with such clarity and beauty that it brings tears to the eyes, and the next, he's floating a stinky bit of eisegesis or a non-sequitur about God's character. A good read, but one that requires some discernment."
"Perhaps it is just as well that these are Unspoken Sermons because I doubt that anyone would have the attention span to follow one in a church setting..."