welcoming God to worship

I was at a service a couple of months ago. The leading musician, or "worship leader" welcomed God to the service at the end of one of the initial set of songs. I have heard this phrase before, and maybe have used it. But what struck me this time was, who are we to welcome God to worship? Isn't worship something God invites us into, and welcomes us to? Isn't God at the center of worship? When we welcome God, suddenly we are the center of the act of worship. We call the shots. It becomes about us!!! and not about God. And then I listened to the songs, and while they talked about how great God is, they all pretty much described God in relationship to the central figures of us. I was surprised by all this, and shocked. It reinforced for me one of the the things I wrote about in my dissertation, that those who have responsibility for leading and organizing worship (in its fullest meaning and not just singing praise songs) need to be biblically and theologically literate, and to have received training and supervision in worship.