Rashi on Tanakh2 Samuel 12

A traveler came. [Noson] compared the evil inclination at first to a sojourner that is [quickly] going on his way. Afterwords he is compared to a guest that has become a resident and afterwords he is compared to a man who is the owner of the house.¹This verse is Noson’s parable alluding to the evil inclination. The visiton is first referred to as הֵלֶךְ, then אׂרֵחַ and finally as an אִישׁ, representing the evil inclination’s ability to take more and more control over its victim’s life.

Is worthy of death. Someone who steals from a poor person is tantamount to taking his life²See Baba Kama 119a. Stealing a pruta from anyone is tantamount to killing him. as it is said, "He has taken it's owner's life."³Mishlei 1:19.

Pay fourfold. This is what [eventually] happened, he was punished with [problems concerning] four children the child⁴Related further on in verse 15. and Amnon Tomor and Avsholom.⁵The events with Amnon, Tomor and Avsholom start in chapter 13.

Your master's woman. Michal, the daughter of Shaul.

I will add on. I would add on for you.

Because you have angered the enemies of Adonoy. This is a euphimism a way [to be] respectable to on High.⁶Using “enemies of God” to stand in for God in order for the word “angered” not to have to be applied to Him in a direct way. Yonasan translated, Because you have opened up you have opened the mouth of [those] who hate the people of God.

[He became sick.] [This word] denotes sickness.

And came to repose and lied on the ground. And came [back] to the house and reposed at night lying on the ground.

And he did not eat. [A word] denoting eating like [we find], "I will eat from her hand."⁷Later, 13:6.

Because of God. That loved him [Shlomo].⁸יֽדִידְיָה is a concatanation of יֽדִיד, beloved one and יָה, God.

The royal city. There were two enforced walls [of cities] in it, an outside one and an inside one. The outside city was [called] the royal city, and the inside [city] was a fortress and stronghold.⁹Yoav left this one for Dovid to conquer as is stated in verse 29.

The crown of Malkom. The abomination [idol] of the people of Ammon's name was Malkom. Denoting [the word] Moleich.¹⁰מוֹלֶךְ is an idol to whom children were sacrificed.

It was [hung over] Dovid's head. Itai the Gitite annulled it.¹¹This explanation of the verse is stated in Avodah Zoroh 24. It is prohibited for Jews to derive any pleasure from the idols of gentiles. They must be anulled by a gentile, i.e., taken out of the service of idol worship, after which they are permitted to Jews. Itai the Gitite, a gentile, did this to Malkom for Dovid’s sake.

Saw-like utensils, iron threshing utensils and iron axes. They are types of tortures.

Saw-like utensils. A knife serrated with many [sharp] edges bent towards each other.

Threshing utensils. This is a hacked saw full of cuts like "many sharp edges"¹²Shmuel I, 13:21. that is called laime (O.F.).

The streets. In the mud of the streets and so Yonason [also] translated: "He dragged them in the streets."