Genus of the name

I recently read an interview of Eugene Peterson where he was asked about U2. I found this comment quite interesting about one of U2's recent songs.

The genus of the name, Yahweh, is that it is not a noun, it's a verb, and so you can't objectify a verb and therefore you can't make an idol out of it. It is most naturally understood in the vocative, as an address. A name is that way, as an address. The Bible has a lot of metaphors for God but Yahweh is the unique Biblical word for the Presence -- the One who is present to us and we have to be present to Him. I thought the song "Yahweh" uses the word in a way that partakes of its genius, its uniqueness. It's a personal address: "Yahweh, Yahweh." He's not talking about God, he's talking to God, or calling out to God.