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).

And this is also what he takes Christian doctrine, in all its complexity, to be centrally about, that is, teaching an attitude rather than a set of propositions. Call it joyous openness to life. What's not relevant about that?

Positively, he [Heidegger] shows that the prospect of death doesn't of itself destroy all possibilities of meaning but calls instead for these to be relocated from fantasies about a future post-mortem life. However, I don't think he does enough in this work to show that this relocation has - I believe - a primarily ethical character (in Levinas's sense of 'ethical').

I think he [Heidegger] sets the question up in a useful way and, despite appearances, he's not 'against' technology. He just wants us to have a questioning and thoughtful relation to it. This must be relevant to any approach.

I'm not sure if Cupitt himself still uses this term, but it's useful in suggesting that, actually, there are more choices than the choice between nihilism and faith. In fact, the issue may not be faith as such but the fact that for millennia, Christianity has buttressed itself with a particular kind of metaphysics that has now seemingly reached the end of its life-span. But perhaps Buddhist metaphysics could provide an alternative here - or, at least, offer a direction of travel.

Perhaps - and this goes for the Kyoto School too - one of these insights is that nothingness and unknowing don't have to be equated with a destructive nihilism but with the experience of unity and participation - whilst resisting the tendency of objectifying metaphysics to claim that we can in some way 'know' that this experienced unity is really the truth of how things are, i.e., reveals being itself.

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.