Why did the daughters of Zelophehad remain unmarried until age forty if one should not rely on a miracle regarding childbirth?

This source-based Torah study examines the question: Why did the daughters of Zelophehad remain unmarried until age forty if one should not rely on a miracle regarding childbirth? It follows the canonical Hebrew discussion through the weekly portion and the classical sources cited there, preserving the distinctions and review status of the original. This localized layer is for study and discovery only; it is not a practical halakhic, medical, legal, safety or pastoral ruling.