I'm sitting in a bar where someone is playing old rock with Christian influences:
Will the Circle be Unbroken by Nitty Gritty Dirt band (better known by Johnny Cash)(I have sang this for karaoke, and did the mama voice, the kids voice, and the deep daddy voice)
One Toke Over the Line Sweet Jesus (a little edgy, I admit, but some of us can relate)
Key to the Highway by Clapton
One I haven't heard, which is very rare, is Uncloudy Day, by Don Henley. I learned this song once by singing it in a rural Baptist church, and was amazed to hear it on the radio a few months later, by Don Henley of all people!