Bob Dylan: Gotta serve somebody (1979)
He was rock royalty when he had a surprise conversion to faith in Jesus Christ and started to preach the gospel to his huge audiences. It was the song "Gotta serve somebody" that launched his new faith to the world, with it's message to all, including a "preacher preaching spiritual pride", a "young Turk" and the "rich or poor" that they have to make a choice who they will serve:
"It may be the Devil or it may be the Lord