1)
Why does it forbid to think about another's evil?
1.
Rashi: This warns against Sin'as Chinam, which destroyed Bayis Sheni.
2.
Radak: Refer to 7:10:2:1. There, it says "v'Ra'as Ish Es Achiv Al Tachshevu."
2)
What is the significance of not loving false oaths?
1.
Radak: It says that Hashem hates these, therefore you should not love them.
3)
What is included in "Kol Eleh"?
1.
Radak: Thinking about another's evil, false oaths and the opposite of what is in the previous verse - Emes and Shalom.
