I thought this truly excellent; a very useful read, a broad and yet also thorough review of the history of Christian ideas about God, from the early fathers (up to 500 AD), through the medieval times (500-1500 AD), the reformation (1500-1800), and the post-reformation period (1800-current); it also includes viewpoints from the Eastern Orthodox (as oppposed to the Western/Roman Catholic) tradition for the medieval period, and, for the modern era, a discussion of the Protestant vs Catholic dichotomy. Each section is represented by a few key thinkers, with Lane giving a short factual introduction to their life and work, a few quotes from their writings, and then a summing up of where he stands with respect to their views. This presentation is incredibly useful; it is a good jumping off point for anyone wanting to dig deeper; in and of itself it shows in context the evolution of certain ideas, such as the nature of Christ, how to define predestination, infant baptism, etc, etc; as such it also shows as an unfolding narrative the process by which the church has come to be fragmented into various denominations.
It is funny (or maybe more appropriately, it is disturbing) how the church fathers struggled for centuries about some basic questions which today I take very much for granted. The first 500 years seems to be one big quarrel about whether Jesus was god or man, or something in between, or both, etc. Another assumption of the early period was that of God being non-passible (not affected by emotions) -- this apparently derived from Greco-Roman conception of divinity -- and was the basis for a lot of thought; I think this assumption is fairly discredited today in light of OT scholarship. In medieval times the issues multiplied though again a few key issues echo down the centuries; there were a lot of people tortured and killed for what I consider a fairly trivial argument about whether infants should be baptized or not; this was also the period of the Crusades and religion was extremely politicized. Other aspects of this period are shoots of attempts to reconcile Christianity with humanism, and with rational/scientific inquiry.
It is interesting to me to read that the concept of predestination first arose from Augustine (not Calvin centuries later); the basic premise, which Augustine came to late in his life, was that even faith is a gift from God, thus salvation is entirely dependent on God -- which implies that God must have chosen an elect. I think I would quarrel not with the first statement, but with its implication. I note that this concept has been debated through the centuries (e.g. Jakob Arminium in 1500s arguing that God's grace precedes, but man must choose to accept). The concept in fact was originally a step away from rather than toward elitism -- salvatin depending on God's grace means that it is not just the rich and worthy who can attain it, everyone can potentially attain it; only later did the implication of there then being a spiritual elect creep in. Much later, in the 1900s, Barth solves this issue (to me) by arguing that it is Christ who is elect, and we are all in Christ (and all humanity can potentially be).
Another personal bone of contention is that of blessed assurance. Again this is not actually biblical but became a formal doctrine after Wesley; there were periods of and part of the church that sees personal assurance as distinct from saving faith. I think my overall point here is that much of contemporary teaching may or may not be based on the evolution of reading the Word rather than from the Word itself -- and this lends weight to my belief that each must think/read for him/herself.
For more recent times, there is some good discussion of the modern liberal tradition (basd on historical criticism of the Bible), which generally Lane finds unconvincing (and I agree). Finally and most fascinatingly, the discussion on the modern Catholic church -- post the Second Vatican Council -- suggests that a significant part of the theological differences between Catholic and Protestants have been resolved -- e.g. the original point of division, which is justification by faith rather than by works, seems to be a point on which the Catholics have moved to the Protestant position; though there are of course other key areas of difference, such as papal authority, etc.
All in all, balanced rather than ideological, readable and valuable.