The Quran mentions locked doors in the story of Prophet Yusuf (Joseph, AS), a detail that skeptics once questioned. In the narrative, the wife of Potiphar attempts to seduce Yusuf (AS), shutting and locking the doors to ensure privacy. Some argued that this reference was anachronistic, as they believed the concept of locks was unknown during Joseph's time, being attributed to later civilizations like the Greeks and Romans. However, modern Egyptology has revealed that ancient Egyptians were pioneers in the development of door locks, inventing them thousands of years before the Greeks and Romans refined the designs. This discovery aligns perfectly with the Quranic account, demonstrating its historical accuracy and divine insight.

Locks date back over 6,000 years to ancient Egypt, where they were first invented. These early locks, primarily made of wood, employed a pin tumbler mechanism. Pins within the lock corresponded to a large, heavy wooden key shaped like a toothbrush. When the key was inserted, it lifted the pins, allowing the bolt to slide and secure the door. While the Greeks and Romans later improved upon this basic design, the Egyptians laid the foundation for lock technology. Their locks were used to secure homes, temples, and other important structures, emphasizing their role in daily life and security.

In Surah Yusuf, the Quran describes a moment where Potiphar’s wife, intending to seduce Yusuf (AS), locks the doors:

The phrase “she locked the doors firmly” suggests the use of a security mechanism. Such an account would only make sense if locks were already in use during that era.

Archaeological evidence confirms that the Egyptians were using locks as early as 4,000 BCE. These wooden locks, with their ingenious pin tumbler design, provided a secure method of keeping doors shut. This technology was widely utilized in homes and temples, aligning seamlessly with the Quranic narrative describing locked doors in Joseph's story. This discovery refutes earlier claims that locks were only developed by the Greeks and Romans, instead establishing that the Egyptians were far ahead in their technological innovations.

How could an unlettered man living 1,400 years ago, without access to historical or archaeological knowledge, accurately reference a technology that existed thousands of years before his time? The mention of locked doors in the Quran aligns with modern findings, demonstrating a level of accuracy unattainable through human means in the 7th century. While skeptics once believed that locks were a later invention of the Greeks and Romans, modern archaeology has proven that ancient Egyptians were using functional locks long before Joseph’s time. The Quran’s precise mention of locked doors in the story of Yusuf (AS) serves as a testament to its divine origin and the miraculous knowledge it contains.