A blind man - That is, in one eye; for he that was utterly blind could not possibly be employed in such a service. A flat nose, like that of an ape; so the best versions. Any thing superfluous, such as six fingers, six toes, etc.

For whatsoever man [he be] that hath a blemish, he shall not approach: a blind man, or a lame, or he that hath (m) a flat nose, or any (n) thing superfluous,
(m) Which is deformed or bruised.
(n) As not of equal proportion, or having in number more or less.

For whatsoever man he be that hath a blemish,.... Let him be otherwise ever so well qualified for his office, as with respect to his parentage, against which no objection lies; or, as to his character and abilities, being a man of knowledge and of good manners; and whether these blemishes be, as the Jews (z) call them, fixed, settled ones, which have attended them ever since they were born, and are likely to attend them as long as they live; or are transient ones, only for the present, and perhaps, in a short time, wilt be removed; yet it matters not, while these blemishes are on them:
he shall not approach; to the altar to offer sacrifice, or do any part of the priestly office, for this phrase is expressive of a sacerdotal act: the particular blemishes unfitting a man for such service follow:
a blind man, or a lame; that is blind of one eye, or of both; and is lame of one leg, or of both:
or he that hath a flat nose; which Jarchi explains, whose nose is sunk between his two eyes, whose nose is short, and crooked, or mutilated:
or anything superfluous; more members than usual, as six fingers on an hand, or two gristles in an ear, as Ben Gersom; or whose members are not proportionate, as one eye large and the other small, or one thigh or leg longer than the other, so Jarchi; the Targum of Jonathan is,"whose thigh (or thigh bone) is out of joint;''and so a man draws his foot after him, which is the sense of the Rabbins, as observed by Kimchi (a), and Ben Melech from him; and so such are not fit to be called the priests of the Lord, and much less ministers of his word, who are blind as to the knowledge of divine and spiritual things, and walk not as becomes the Gospel of Christ; or halt between two opinions, or savour not the things of God, and lay not aside all superfluity of naughtiness.
(z) Misn. Zebachim, c. 12. sect 1. & Becorot, c. 7. sect. 1. (a) Sepher Shorash. rad.

A flat nose - Most restrain this word to the nose, and to some great deformity relating to it. But according to others, it signifies more generally, a person that wants some member or members, because the next word, to which it is opposed, signifies one that hath more members than he should.