Why does the Torah need to insert "Ki Yih'yeh Riv"?
Rashi: What begins with a quarrel, ends in Beis-Din. This teaches us that Shalom does not come out of quarrels. 1
See Torah Temimah, note 1.
Why does the Torah inset the (otherwise superfluous) phrase "Venigshu el ha'Mishpat"?
Is everyone who is found guilty in Beis-Din (of a La'av or an Asei) subject to Malkos?
Rashi: "Im Bin Hakos ha'Rasha" (in Pasuk 2) implies that it is only sometimes - where he transgressed a La'av that is not Nitak la'Asei (rectifiable by performing an Asei) 1 - that he is Chayav Malkos.
Refer to 24:5:153:1.
What are the implications of the word "u'Shefatum"?
Sanhedrin, 10a: It implies that two judges are required to adjudicate - and based on the principle that a Beis-Din can never comprise an even number of judges, three are required. 1
What is the connection between Malkos - in Pasuk 2), which one receives for transgressing a La'av, and a quarrel between two people, and what is the significance of "Vehitzdiku es ha'Tzadik"?
Ramban (citing Makos, 2b): The Torah is teaching us the Din of Eidim Zomemin, where two witnesses testify against Shimon, and a second pair of witnesses disprove them 1 , vindicating Shimon ("Vehitzdiku es ha'Tzadik") and proving that the first witnesses are guilty ("Vehirshi'u es ha'Rasha"). 2
Sifri: "Vehitzdiku es ha'Tzadik" denotes a Mitzvah to try and save the defendant from Malkos. 3