What makes someone a mamzer? There are three different opinions about whether it is a child born from forbidden relationships that are just negative prohibitions (Rabbi Akiva), ones that are punishable by karet (Shimon HaTimni) and ones that are punishable by death by the court (Rabbi Yehoshua). The Mishna rules like Rabbi Shimon HaTimni but also brings a support for Rabbi Yehoshua’s opinion from a book recording the lineage of people that mentioned a mamzer from a relationship of a man with a married woman which is punishable by the court. If one’s wife or one’s yevama dies, one can marry her sister. That is only permitted upon death, but is not permitted upon divorce or chalitza. There are three different ways to understand Rabbi Akiva’s opinion. How are these different ways, as well as the opinions of Rabbi Shimon HaTimni and Rabbi Yehoshua derived from the verses in the Torah? All opinions agree that one who sleeps with his wife when she is in nidda or his wife after she has been unfaithful, the child is not a mamzer. The reason is because bethrothal takes effect in these situations. Regarding a woman waiting for yibum who is betrothed by a different man, there is a debate if the betrothal is valid. Therefore, it wasn’t mentioned in the list of those whose offspring are not mamzerim. There were three things listed in this scroll with lineages that was mentioned in the Mishna: That a particular person was a mamzer (as mentioned in the Mishna), the Mishna of Rabbi Eliezer ben Yaakov is kav v’naki, and that Menashe the king killed Isaiah. Why did Menashe kill Isaiah? He pronounced him guilty for going against three things that Moshe Rabbeinu said. What were the three things? What could Isaiah have answered to Menashe and why didn’t he? How was Isaiah killed?