OK, Now what??

I have wanted to serve a church for about 3 years now and Sunday my new vocation begins. I cannot help but to wonder why I am getting pretty nervous and unsure about the whole thing. Here I am in the middle of a semester, and a pretty tough one at that, and now this huge responsbility gets laid on my lap. I have my sermon ready, but is it good enough? Will it bring the people closer to God? I guess I must remember something that I put into my sermon. The power is in the message. My prayer is that no matter what I do that I glorify God.