What is the meaning of "Yehoshua wrote these matters in Sefer Toras Elokim"?
Rashi citing the Targum: Yehoshua wrote his words in a Sefer, and hid it in the Sefer Torah 1 .
Rashi citing Makos 11a #1: He wrote the last eight verses of the Torah (that begin with Moshe's death).
Rashi citing Makos 11a # 2: He wrote the Parshah of Arei Miklat, like they are written in Sefer Toras Elokim.
Malbim: He wrote these matters amidst his Sefer (which he wrote
Does this not belittle the honor of the Sefer Torah? Perhaps Hashem authorized this. (PF) Lev Yitzchak - the Targum means that Yehoshua hid [what he wrote] in the place where the Torah is.
Why did he take a rock?
Radak (25): The rock [and Alah] were witnesses about the Bris.
Malbim: He wanted to designate a special place for his Sefer. He took a hollow rock to be an Aron for his Sefer.
What is the Alah?
Rashi citing Targum Yonasan: It is Alsah, i.e. the [door]posts of the entrance [to the Mishkan]. 1
Rashi: This is like the Alah (tree) near Shechem
Why does it say "Asher b'Mikdash Hashem"?