"Du, o schönes Weltgebäude" (You, O beautiful building of the world) is a Lutheran hymn in German, with text by Johann Franck and melody by Johann Crüger. It was first published in Crüger's 1649 Geistliche Kirchen-Melodien, and was later adopted in other hymnals, such as the 1653 edition of his Praxis pietatis melica. The topic is renouncing the world, hoping to be united with Jesus. While the hymn is no longer in practical use, one stanza, "Komm, o Tod, du Schlafes Bruder" (Come, O death, to sleep a brother), was prominently used in Bach's solo cantata Ich will den Kreuzstab gerne tragen, BWV 56; in English, it is commonly referred to as the "Kreuzstab cantata".