What is the meaning of "Ba'alasah El Kiryas Ye'arim"?
'Rashi': It is to [the city] Ba'alah, which is Kiryas Ye'arim. Radak ? it says "Ba'alah Hi Kiryas Ye'arim" (Yehoshua 15:9). We find also "Kiryas Ba'al Hi Kiryas Ye'arim" (ibid., 18:14) and it is called also "mi'Ba'alei Yehudah" (Shmuel II, 6:2). The Aron was there for 20 years, after the Pelishtim returned it, until David brought it from there.
Why does it say "Asher Nikra Shem"?
'Rashi', Radak, Rashi (Shmuel II, 6:2): This is like it says in Shmuel II, 6:2 - the Aron was called a name. The name of Hashem is on it. Even though the Aron was exiled to Pelishtim, this name did not depart from it.
QUESTIONS ON RASHI
Rashi writes that the Aron was called on the name of Hashem [Yoshev ha'Keruvim]. Was this only here?
'Rashi': No. The verse teaches that even though the Aron was exiled to Pelishtim, this name did not depart from it.
Radak: Yes. Hashem's name was sanctified through it when it was in Sedei Pelishtim.
Malbim: Yes. This hints to Uza's death for his sin in the continuation. Since the Keruvim are a Merkavah for Hashem, the ones who carry it must resemble the bearers of the Merkavah above, i.e. [angels] with [the form of] a human face, and not via an ox 1 and donkey. Also the people who carry it must be from Levi, which Hashem chose!
The bearers of the Merkavah above have four faces, with the forms of a person, lion, ox and eagle (Yechezkel 1:10)! Perhaps the human face is primary. Alternatively, each has a human form, unlike the oxen that David used to take the Aron. (PF)
