A single voice, whether coming from behind a podium or across the ether via webcam, can change the way people think, act and relate to their world. All because of the power of words.

The next episode of the public-affairs program “Sanctuary” – which airs at noon Sunday, Nov. 8, on ABC7-Channel 7 – delves into the art and impact of the spoken word, and particularly the ancient yet contemporary presentation known as the sermon. For millennia, speakers have offered insight, observation and opinion that has shifted perceptions, altered actions and, on the grandest stage, changed history.

Discussing how that happens, and what goes into crafting an effective sermon, are two frequent speakers who address different audiences in very different ways: Rabbi Wendi Geffen of North Shore Congregation Israel in Glencoe, and Dr. Michael Slater, an emergency physician at Chicago’s Mount Sinai Hospital. Cindy Sher hosts.

The program also is available for viewing on the Jewish United Fund website, www.juf.org/videos.

“Sanctuary” is a joint production of the Jewish United Fund of Metropolitan Chicago and the Chicago Board of Rabbis, in cooperation with ABC7-Channel 7.