Johann Heermann was a German Lutheran theologian, poet, and hymnodist who lived from 1585 to 1647. Born in Rudna, he spent much of his life serving as a parson, notably in Köben, before moving to Leszno in Poland due to persistent health issues. He is recognized as a significant figure in Protestant hymnody, having composed numerous devotional poems and hymns. His literary output included both Latin and German works, often following the poetic guidelines established by Martin Opitz, and his hymns have been set to music by composers such as Johann Sebastian Bach.