Seven mezzuzah parchments were discovered in Cave 4 (4Q149-55) and one in Cave 8. Mezzuzot are biblical passages affixed to the doorstep.

As in the case of tefillin, scholars have questioned how early the observance of these commandments became widespread. The Qumran materials provide the earliest examples, reaching into the Hellenistic and early Roman periods.

See also-

• Tefillin and Mezuzah, Lawrence H. Schiffman, Reclaiming the Dead Sea Scrolls, Jewish Publication Society, Philadelphia 1994.
• Qumran Phylactery, 1st century CE
• Roitman, Adolfo, The Bible in the Shrine of the Book; From the Dead Sea Scrolls to the Aleppo Codex. Jerusalem- The Israel Museum, 2006.