1)
Why does it say "Al Avosecha"?
1.
Radak: This is like El Avosecha. (So it says in Divrei ha'Yamim II, 34:28. - PF)
2.
Malbim citing Mahari: Your soul will be in a higher spiritual place than the level of your righteous fathers.
2)
What is "Kivrosecha"?
1.
Radak: It is Kivros Avosecha.
3)
Did Yoshiyah die "b'Shalom"? They shot 300 arrows at him (Eichah Rabah 1:18), and his body became like a sieve (Sanhedrin 48b)!
1.
Rashi, from Mo'ed Katan 28b: He will not see Churban ha'Bayis.
2.
Malbim: He will not die b'Shalom, but he will be buried b'Shalom. They took his body from the battlefield to the cemetery, and no one protested.
