This is classic Kleinig...
I found this on the 'net (currently on holidays, doing a bit of surfing!). John Kleinig (MTh & PhD from Cambridge) was Lecturer* in Old Testament and also Liturgics when I was at seminary (since retired), a theological mentor as well as being a spiritual father to many students. He's just getting warmed up here, but the most important thing he says is, and I paraphrase: You won't understand Lutheran worship if you don't realise that God is present in it. Simple enough, but what you don't get to see in the clip, unfortunately, is how he unpacks that truth in a manner that helps you to see things you've never seen before. Anyway, this simple truth explains a lot, and not only about Lutheran worship per se, but also about the deterioration of Lutheran worship over the last 40 years or so - we've stopped believing that God is present (I'm speaking of general trends).
* In American terms a Professor.
HT The LCSorg's channel.