Members of a historic black church worshipped at their sanctuary, Sunday, for the first time since a gunman opened fire at a Bible study meeting, killing nine people. Uniformed police officers stood among the congregation as a measure of added security. The service started with a message of love, recovery and healing, which will no doubt reverberate throughout churches across the U.S. “We still believe that prayer changes things. Can I get a witness?” the Rev. Norvel Goff said. The congregation responded with a rousing “Yes.” “But prayer not only changes things, it changes us,” Goff said.