Mishnayos Avos Perek 3 Mishnah 11

"One who profanes the Kodeshim (sacred material)": One who brings Kodeshim of the altar to [a state of] pigul (a sacrifice that becomes unfit, due to the intention of the officiating priest, while offering it, to consume it after its permitted time), notar (a sacrifice that becomes unfit, due to being left unconsumed after its time limit) or [of becoming] impure; or he misappropriates and benefits either from Kodeshim of the altar or Kodeshim of the Temple maintenance fund.

"one who desecrates the holidays": the intermediate days of the festival. He does work on them or treats them according to what is customary to eat and drink on a common day.

"one who whitens (embarrasses) the face of another in public": The face of one who is embarrassed turns red first and then white, as the spirit [of a person] has two movements, one outwards and one inwards. And when one embarrasses a person, at first the breath moves outwards, like one who is full of anger and his face turns red. And when he does not find a solution how to get rid of this embarrassment from on his face, he worries inside himself and the breath goes inwards because of the pain, and his face turns yellow and [then] white. And this is what they said (Bava Metzia 58b) about the matter of whitening: "when the red leaves, the white comes."

"one who nullifies the covenant": who did not circumcise [himself] or who did circumcise but pulled the foreskin to cover the circumcision, in order that it not be visible that he is circumcised.

"one who reveals meanings (literally, faces) in the Torah": who shows meanings and explanations that do not conform with the halacha (law). For example, one who translates "And from your seed do not give to pass to Molekh" (Leviticus 18:21) as "And from your seed do not give to impregnate an Aramean woman." (Mishnah Megillah 4:9) And this is not the simple meaning of the text. And included within this is teaching worthless homiletical interpretations. A different explanation: "reveals faces" - he makes his face brazen to transgress words of the Torah publicly 'with a high hand' and he is not shame-faced.

"even though he has Torah knowledge and good deeds": and he did not repent from one of these sins that he has in his hand - even though afflictions came to him and he died with afflictions - he does not have a share in the world to come. But if he repented before his death, there is nothing that stands in front of repentance.