For five years, an ancient clay seal remained in a closet in Jerusalem’s Institute of Archaeology. After the seal was dug up at the foot of the southern part of Jerusalem’s old city wall, initial examination failed to establish the significance of the nearly 3,000-year-old object. But then a researcher carefully scrutinized the letters on the seal, resulting in a major discovery. The inscription, written in ancient Hebrew, reads: “Belonging to Hezekiah [son of] Ahaz king of Judah.”

 At the center of the seal is a two-winged sun surrounded by two icons symbolizing life. The archaeologists who discovered the seal believe…