Why a certified Sofer STaM matters
The words inside a mezuzah or a pair of tefillin are not decorative. A single cracked letter, a letter written out of order, a faded line — any one of these can invalidate the entire scroll. Only a trained, certified sofer is qualified to know the difference between a scroll that looks fine and one that actually is fine. Certification is what separates a careful guess from a halachically grounded answer.
Read about Rabbi Levi's training →