May that be because, with all respect to Joe, it doesn't actually say anything?

Well yes. I admire the efforts of those who interpret God for themselves to fit their own personal mould. Unfortunately, this generally involves so much watering-down of the God concept that, well, the valiant interpreters might just as well be atheists themselves.

As for this:

And could it be that all the sacred myths and sacred writings and sacred rituals of all cultures, serve at their best to awaken in us a mindfulness of the sacredness that surrounds us? And could it be that through time, there have been people who embody the sacred for us, in whom the sacred is incarnate?

As I pointed out recently (and got ignored for, but hey), all this sacredness is a bit relative. What's a sacred ritual in your culture might be abhorrent in someone else's. I can't help detecting a hint of implicit religious imperialism here. Had you perchance been born into certain other religious cultures and typed what you just typed, you might well have had in mind the sacred rituals of removing the foreskin of a month-old baby boy or the whole of the external genitalia of little girls, or the enforced subjugation of women to the extent of their having to wear clothing that permits only a postbox-sized part of them to be shown in public. To someone or other, all these similarly religion-derived things are just as sacred as the stuff that gives you so much edification. It might come as something as a shock to those who find such solace in these sacred rituals and traditions to hear that some of us find equal, if not greater, awakening of joy in the triumphant ordinariness of nature in all its beauty and diversity. Looking for sacredness in holy writings of dubious origin, and in traditions handed down from a thoroughly authoritarian regime which just happens to be the one you were born into, smacks rather strongly of a lack of trust in good old Mother Nature (not to speak of good old Mother Common Sense, to quote that most down-to-earth fellow John Seymour).