Perhaps this is an area where every generation starts from scratch. Although the crisis of the First World War inaugurated an especially strong period of disillusion with regard to the optimism of the previous age, the pattern has repeated itself in many ways in more recent times, e.g., the loss of faith in politics as a means of advancing human well-being. And perhaps this also has to do with basic elements in growing up.

Perhaps unsurprisingly, there's a paradox here! Kierkegaard's own indirect communication proposes that we start with the experience of those who don't believe and meet them on their own ground. His success in doing this is evidenced by the fact that, at least for some periods of the 20th century, aspects of his work became a major focus for radical thinkers of various kinds, including the non-religious and, interestingly, a significant number of Jewish thinkers (Buber, Rosenzweig, Taubes, and others).

Every stroke a tennis player plays is different, yet we perceive them as playing in a distinctive and unique way. It's what Heidegger called a certain 'how' of existing. It's ultimately always singular, and the double task of (a) getting it in view and (b) communicating it to others will inevitably be marked more often by failure than success!

Essentially I see the new atheism as largely part of the crisis of the left. Having failed to carry through its agenda in relation to political and economic life it's rounding on religion, ignoring the fact that, in some key respects, many believers are likely to share leftist aspirations.

Sartre is one example of someone who does just this. Every text is, after all, a human document and whatever Kierkegaard thought about God was clearly a matter of human thought that can, in principle, be retrieved and interpreted by other human beings. A phenomenological approach to religion must, it seems to me, adopt the old adage: nothing human is alien to me.

However, in brief, I think the connecting of 'God' and 'Being' is one of these things for which there seems to be a natural impulse in human thinking but it can also lead to confusions. Religious believers mostly want to see God as the epitome of what is most really real and in some non-theistic contexts, people talk simply of 'Isness'.

Of course, if one's reading Kierkegaard for personal interest that's fine - but it's sloppy scholarship just to cherry pick what suits one from a particular author, whether it's Kierkegaard, Heidegger, or whoever. Nevertheless, it does seem to me that even the more religious parts of the authorship can offer significant insights into the meaning of the human condition to those who can't then say that, e.g., they believe Jesus Christ is the Son of God and their personal Saviour.