Ein feste Burg ist unser Gott
"A Mighty Fortress Is Our God" (German: "Ein feste Burg ist unser Gott") is one of the best known hymns by the reformer Martin Luther, a prolific hymnodist. Luther wrote the words and composed the melody sometime between 1527 and 1529. It has been translated into English at least seventy times and also into many other languages. The words are a paraphrase of Psalm 46.