Investigators believe depression and financial problems may have led to the shootings. The sanctuary holds close to 3,000 people and most seats were taken.
Several children read letters they wrote to their dead friends.
Police say each one was in their own bed. Members of the Bishop and Legg families sat close together during the service. They left a card in front of the church thanking people for their support. An inscription inside reads, Miss us a little, but not too long, And not with your head bowed low, Remember the love we once shared Miss us, but let us go Sherrill Bishop was a part-time teacher at Summit View Elementary School, where all three children were students. John Bishop managed local networks for Qwest.