All religions offer the experience of the divine to their followers, which mainly is a psychological experience of "epiphanic rapture" that mostly is created through ritual.
The rest is just local interpretation and some particular ethics which are not essential to the experience.
That's why, I think, it could be said that all religious people worship one thing, but that thing is not some god, is not an entity or a personification of something, it's an experience of their own psyche or self which, if experienced fully, is the godly bliss, paradise, lavondyss, avalon.