1)
What is the significance of the 'many days that Avraham sojourned in the Land of the P'lishtim'?
1.
Rashi: It means tt hat following the twenty-five years that he spent in Chevron (from the age of seventy-five to ninety-nine) 1 , he spent twenty-six years in Be'er-Sheva (from the age of ninety-nine to a hundred and twenty-five) - twelve years before the Akeidah - after which he returned to Chevron.