O Mensch, bewein dein Sünde groß

"O Mensch, bewein' dein' Sünde groß" (O man, bewail thy sin so great) is a Lutheran Passion hymn with a text written by Sebald Heyden in 1530. The author reflects the Passion of Jesus, based on the Four Evangelists, originally in 23 stanzas. The lyrics were written for an older melody, "Es sind doch selig alle, die im rechten Glauben wandeln" (Zahn No. 8303). The first and last stanzas have appeared in 11 hymnals. Catherine Winkworth translated it as "O man, thy grievous sin bemoan". The hymn has been used in Passion music and is known in Bach's setting as a chorale fantasia closing Part I of his St Matthew Passion.