Martin Rinkart was a minister in the little town of Eilenburg in Germany some 350 years ago. He was the son of a poor coppersmith, but somehow, he managed to work his way through an education. Finally, in the year 1617, he was offered the post of Archdeacon in his hometown parish. A year later, what has come to be known as the Thirty-Years-War broke out. His town was caught right in the middle. In 1637, the massive plague…