Rambam - 1 Chapter a Day

Any priest who has a physical blemish - whether a permanent blemish or a temporary blemish1 - should not enter the area of the altar and beyond in the Temple, as [Leviticus 21:21-23] states: "[Any man from among the descendants of Aaron the priest who has a blemish...] shall not come near the curtain,2 nor may he approach the altar. If he transgresses and enters [this area],3 he is liable for lashes even if he did not perform any service.

If he performs service in the Temple, he invalidates and desecrates his service. He is worthy of lashes for the service as well,4 as [ibid.:17] states: "One who has a blemish shall not draw near [to offer...]."5 According to the Oral Tradition, we learned that this warning means that he shall not draw near to the Temple service.

Similarly, a person with a temporary blemish who performs service in the Temple invalidates [his service] and is liable for lashes,6 as [ibid.:18] states: "Any man who has a blemish shall not draw close...." According to the Oral Tradition, we have learned that this is a warning against [a priest] with a temporary blemish [serving]. [A priest] with a blemish who serves is not liable for death, only for lashes.

All physical blemishes - whether the priest had them from birth or acquired them afterwards, whether they will heal or they will not heal - disqualify [him] until they heal.

A permanent blemish is a broken leg or a broken arm.7 A temporary blemish is a dry skin eruption or a moist skin eruption also known as a chazizit.8 Not only the blemishes mentioned in the Torah,9 but any apparent bodily blemish disqualifies the priests, as [ibid.:21] states: "Any man who has a blemish," i.e., any type. Those mentioned by the Torah are merely examples.10

There are three types of blemishes [involving humans]:11

a) blemishes that disqualify a priest from serving and an animal from being offered [as a sacrifice];12

b) blemishes that only prevent a man from serving;13

c) blemishes that do not disqualify a priest, but because of the impression that would be created,14 [our Sages] stated that every priest who has such a blemish should not serve.

Whenever [a priest] who has a blemish that disqualifies both a person and animal serves, whether inadvertently or intentionally, his service is invalid. If he served intentionally, he is liable for lashes. Whenever [a priest] who has a blemish that disqualifies only a person serves, even though he is liable for lashes,15 his service is valid.16 If he has one of the blemishes that disqualify him because of the impression that could be created, he is not liable for lashes and his service is valid.

Only blemishes that are apparent17 disqualify a person. Blemishes that are within the cavity of the body, e.g., a person's kidney or his spleen was removed or his intestines were perforated, even though he becomes a treifah,18 his service is acceptable. [This is derived from the mention, Leviticus 21:19, of] "a broken leg or a broken arm." Just as these are apparent, all [disqualifying blemishes] must be apparent.

An uncircumcised person19 is like a foreigner [as Ezekiel 44:9] states: "Any foreigner20 with an uncircumcised heart and uncircumcised flesh." Therefore if an uncircumcised [priest] serves, he disqualifies his service and is liable for lashes21 like a non-priest22 who serves. He is not, however, liable for death.23

A priest who married women sinfully24 may not serve25 until he is compelled by the court to take a vow dependent on the discretion of other people so that it cannot be nullified26 that he will not continue to sin. He may then perform the service, descend [from the altar], and divorce her. Similarly, if he would become impure due to contact with a human corpse,27 he is disqualified until he makes a resolution in court not to contract such impurity. If he transgressed and performed service before taking such a vow or making such a resolution, he does not disqualify his service even though he remains married in sin.28

When a priest performed service and afterwards, his [genealogy] was checked and it was discovered that he was a challal,29 his previous service is acceptable, but he may not serve in the future. If, however, he does [continue] to serve, he does not desecrate the service. [This is derived from Deuteronomy 33:11]: "May God bless His legion and find acceptable the work of his hand." [implied is that] He will find acceptable even the desecrated among them.30

The High Court would sit in the Chamber of Hewn Stone.31 Their primary ongoing activity was sitting and judging the priests, e.g., examining the lineage of the priests32 and inspecting their blemishes. Whenever a disqualifying factor was found in the lineage of a priest, he would put on black clothes and wrap himself in black and leave the Temple Courtyard. Whoever is found to be bodily sound and of acceptable lineage puts on white garments and enters and serves with his priestly brethren.

[A priest] who is discovered to be of acceptable lineage, but was discovered to have a physical blemish should sit in the Chamber of Wood33 and [removes] worm-eaten wood for the [Altar's] pyre.34 He should be included in the division of the sacrifices with the members of his clan and may partake [of the sacrifices],35 as [Leviticus 21:22] states: "He may partake of the food of his God from [the sacrifices of] the most holy order and of the sacred foods."