1)
Why does it say "va'Yevk El Kever"?
1.
Radak: This is like Al Kever, just like "El he'Harim Lo Achal" (Yechezkel 18:6) is like Al he'Harim, and "va'Ykonen ha'Melech El Avner" (verse 33) is like Al Avner.
Why does it say "va'Yevk El Kever"?
Radak: This is like Al Kever, just like "El he'Harim Lo Achal" (Yechezkel 18:6) is like Al he'Harim, and "va'Ykonen ha'Melech El Avner" (verse 33) is like Al Avner.