I have read Dawkins' 'God Delusion', and I am still a Christian. Having read 'Gunning for God', however, I am surprised that the atheist reviewers above haven't begun to waver in their faith (and yes, it is 'faith', whatever their protestations to the contrary). For anyone with a genuinely open mind I would suggest setting this book next to the latest from Dawkins / Hitchens et al, and seeing where the arguments lead you. In this book Lennox does not so much critique atheist arguments against the existence of God as demolish them. By the end, atheism is revealed to be wish-fulfilment of the highest order; a system of belief that denies any ultimate consequence to our actions, that claims we are cast adrift in a purposeless, meaningless universe, 'free' to do whatever we want (although not free, because all we are is gene survival machines), and without any ground for morality.
Lennox takes apart the fallacy (suggested again by a reviewer above!) that we as a 'highly evolved species' can make our own decisions about right and wrong, and still end up with a generous, loving code of conduct that does not marginalise or oppress the weak. Yes, there are Christians who have committed terrible acts, but they are inconsistent with the teaching of Christ, who urged us to love our enemies, and forgave the soldiers who nailed him to a cross. And yes, there are atheists who are kind and compassionate people, but this is manifestly at odds with their naturalistic worldview that suggests that the weak, the unfit, and the disabled should be exterminated because they are polluting the gene pool. To get a feel for where Dawkins' philosophy is heading you only need to see the youtube clip where he argues that strictly morally he would be in favour of infanticide. Any atheist who reacts with horror to the idea needs to realise that they are reacting against it despite their atheist worldview, not because of it. And perhaps he or she would do well to consider again the teaching of Jesus, who blessed little children and welcomed those who society had rejected.