Megillah, Chapter 4, Mishnah 10 - the final Mishnah of Maseches Megillah. The Mishnah deals with passages in the Torah and in the Prophets that are read publicly but are not translated, because there is something negative about their content.
The passages listed by the Mishnah:
"Maaseh Reuven nikra v'lo mistargem" - the incident recorded in the Torah in which Reuven lay with Bilhah, his father's wife: it is read publicly, but it is not translated, out of respect for Reuven.
"Maaseh Tamar nikra u'mistargem" - the incident of Yehudah and Tamar, that he came to her and in the end she was about to be executed and was saved: that entire account is both read and translated, since it contains no disgrace to Yehudah - in the end Yehudah admitted the truth and saved Tamar.
"Maaseh egel harishon nikra u'mistargem" - the first part of the account of the golden calf is both read and translated, because there was atonement for the Jewish people for that sin. Some explain that it is fitting that we feel ashamed of the incident, and that shame helps us to do teshuvah.
"V'hasheni nikra v'lo mistargem" - the second part, in which Aharon and Moshe hold a conversation between themselves, is read but not translated, because it contains disgrace to Aharon and presents him in a negative light.
"Birkas kohanim u'maaseh David v'Amnon lo nikra'in v'lo mistargemin" - the passage in the Torah in which the kohanim bless Israel, and the incident in the book of Shmuel that occurred in the days of David: this is the incident of Amnon and Tamar, in which Amnon violated Tamar, and David's name is mentioned in it.
The Gemara's version of the Mishnah:
The version of the Mishnah found in the Gemara reads that birkas kohanim and the incident of David and Amnon are read but not translated, and this version is far more understandable: there is no such thing as skipping part of the Torah scroll. In the Prophets there are indeed portions that are not read publicly, since we do not read all of the books of the Prophets but only selected sections as haftaros; but it is impossible not to read the entire Chumash. Therefore birkas kohanim is certainly read, and it is only not translated.
The reason birkas kohanim is not translated is that a listener might mistakenly understand it as though the Holy One, blessed is He, shows favoritism, since in Hebrew the wording implies that He lifts His countenance and acts unfairly. And the incident of David and Amnon is not translated out of respect for David, since his name is mentioned there.
The haftaros that are not read:
"Ein maftirin b'merkavah" - Maaseh Merkavah is the first chapter of the book of Yechezkel, and it is not read as a haftarah so that people should not come to study and delve into these matters. "V'Rabbi Yehudah matir" - in his opinion there is no need for such a concern, and this is the halachah in practice: we read Maaseh Merkavah, that first chapter of Yechezkel, on the first morning of Shavuos.
"Rabbi Eliezer omer: ein maftirin b'Hoda es Yerushalayim es toavoseha" - chapter 16 of Yechezkel, because it is not respectful to Yerushalayim and to Israel, and therefore it is not read publicly.
With this we conclude our study of Maseches Megillah. Thank you for joining us, and we hope you will join us for the next tractate as well - Maseches Moed Katan.