Does it exist?

I led worship at cession tonight. Anyway, pre-service I was trying to find a passage in the bible that talks about God inhabiting or dwelling the praises of his people. I asked a few people who have have good knowledge of the bible and they couldn't remember. I rang my dad and asked him to look for it.. he searched the net to find the reference for me and he couldn't find it. I searched my NIV concordance last night - and couldn't find it...

I'm starting to wonder if it exists! Or is it one of those phrases that we have all heard so often that we simply believe it to be scripture?

Ten points to anyone that can find the reference and post it for me!!!