From the same link for Hal Smith: Starting in 1987 he was the voice of the main character John Avery Whittaker on the Focus on the Family radio drama Adventures in Odyssey. He was responsible for much of the cast joining the show after he signed on, and he continued recording episodes until a few weeks before his death, even while his health deteriorated. Additionally, he voiced dozens of other characters during the over 260 episodes he participated in.

Many christians will appreciate the great work he did as "whit" on AIO. Guess you don't have to have ANY spiritual connection at all. It is a fantastic radio program for kids and adults to listen to, good biblical based lessons and with the whole series it's like you have a group of radio friends/family to tune into. Best gift, cd's of the series!