Halachah 1 — Disqualification Due to Faulty Pronunciation
A priest who cannot pronounce the words of the priestly blessing correctly may not recite it.
This includes those who confuse similar letters (e.g., alef and ayin, shibbolet and sibbolet), stutterers, or anyone whose speech is unclear and not understood by all.
Halachah 2 — Disqualification Due to Physical Deformities
A priest may not recite Birkat Kohanim if he has visible deformities on:
- his face,
- hands,
- or feet,
that draw the attention of the congregation (e.g., bent fingers, discoloration, white blotches).
A priest who drools while speaking or is blind in one eye is also disqualified unless he is well known in the community, in which case no distraction occurs and he may bless.
Similarly, discoloration of the hands disqualifies a priest unless such coloration is common in that city.
Halachah 3 — Disqualification Due to Severe Transgressions
A priest who:
- committed murder, or
- served idolatry,
may never recite Birkat Kohanim again, even if he repented.
This includes voluntary, coerced, and even inadvertent idolatry, as well as conversion to idol worship. Other sins do not bar a priest from blessing.
Halachah 4 — Disqualification Due to Lack of Maturity or Intoxication
A young priest may not recite the priestly blessing until he has grown a full beard.
A priest who drank:
- one revi’it of wine at once may not bless until the wine’s effects wear off,
- more than a revi’it, even diluted or consumed gradually, may not bless until sober.
If he drank a revi’it in two sessions or with sufficient water mixed, he may bless.
This restriction parallels Temple service laws.
Halachah 5 — Disqualification Due to Unwashed Hands
A priest must wash his hands up to the wrist before blessing.
Failure to do so disqualifies him.
A challal (disqualified kohen) may never recite Birkat Kohanim, as he is not halachically a priest.
Halachah 6 — Obligation of the Fit Priest to Bless
Any priest who has none of the disqualifying conditions must recite Birkat Kohanim—
even if:
- he is ignorant,
- careless in mitzvot,
- spoken ill of,
- or dishonest in business.
We do not prevent a sinner from fulfilling mitzvot.
Halachah 7 — The Source of the Blessing
The effectiveness of the blessing does not depend on the priest’s righteousness, but on God, as the verse states:
“And I will bless them.”
The priest merely fulfills the command; God bestows the blessing.
Halachah 8 — Who Is Included in the Blessing
Those standing:
- behind the priests are not included,
- beside them are included.
Partitions—even iron walls—do not exclude people, provided they are facing the priests.
Halachah 9 — Requirement of a Minyan
Birkat Kohanim requires ten Jews, and the priests may count toward the ten.
If the congregation is composed entirely of priests:
- all ascend and bless,
- they bless Israel in all directions,
- women and children respond “Amen.”
If ten priests remain below, they respond Amen while others bless.
Halachah 10 — When the Chazan Is the Only Kohen
If the only kohen present is the chazan, he does not bless unless he is confident he can do so without losing his place.
If no kohen is present, the chazan recites a prayer requesting the priestly blessing verbatim, without “Amen” responses, and continues with Sim Shalom.
Halachah 11 — Repetition of the Blessing
A priest may recite Birkat Kohanim multiple times in one day in different synagogues.
A priest who does not move when R’tzey is recited may not ascend later during that service, unless he already began moving before R’tzey concluded.
Halachah 12 — Severity of Neglecting Birkat Kohanim
A priest who fails to bless when eligible violates three positive commandments.
One who blesses is promised blessing in return.
One who does not bless forfeits that blessing.
