I just had the kids pull a shirt that I wanted to wear out of the washing machine that hadn't been started yet. It must be clean, right, because it was in the washer?
Thousands of people will go to church tomorrow on the same basis - hoping that being in the proximity of cleansing will make them clean. It doesn't work that way. Christ's blood must be applied personally to be effective.
Receive Christ personally. Walk with God personally. Then church will make a difference - both TO you, and THROUGH you.