Night after night, Bob Dylan's 1979 Gospel concerts at San Francisco's Warfield Theatre made news for all the wrong reasons, according to angry fans.

The November 11th show opened with Dylan roaring into "Gotta Serve Somebody" from "Slow Train Coming," the first of what Dylanologists called his "born-again" albums.

"You may be a businessman or some high-degree thief," he sang. "They may call you doctor, or they may call you chief, but you're gonna have to serve somebody. … Well, it may be the Devil, or it may be the Lord, but you're gonna have to serve somebody."

To add insult to injury, these concerts included fiery sermons by Dylan, while he avoided classic songs that made him a legend.

"I was 19 years old and that was my first Dylan concert," recalled Francis Beckwith, who teaches Church-State Studies at Baylor University. "The atmosphere was highly charged. Some people booed or walked out. … There were people shouting, 'Praise the Lord!', but you could also smell people smoking weed."

Beckwith kept going to Dylan concerts, while following years of reports about whether the songwriter was still a Christian, had returned to Judaism or fused those faiths. These debates will continue as fans, critics, scholars and musicians celebrate Dylan's 80th birthday on May 24th.

With a philosophy doctorate from Fordham University in New York and a law degree from Washington University in St. Louis, Beckwith is certainly not a conventional music critic. He made headlines in 2007 when -- while president of the Evangelical Theological Society -- he announced his return to Catholicism.

To mark that birthday, Beckwith is publishing online commentaries on what he considers Dylan's 80 most important songs. The Top 10: "Like a Rolling Stone," "My Back Pages," "Stuck Inside of Mobile With the Memphis Blues Again," "Mr. Tambourine Man," "Visions of Johanna," "Tangled Up in Blue," "Blowin' in the Wind," "Precious Angel," "It's Alright, Ma (I'm Only Bleeding) and "Desolation Row."

Beckwith considered three factors -- popularity, lasting cultural significance and, finally, whether each song was "something I could listen to over and over." He stressed that Dylan's entire canon includes images and themes rooted in scripture and faith.