Esther 8:13

The copy of the writing, for a commandment to be given in
every province, was published to all people
A copy of the letters sent to the governors of provinces; the sum and substance of them was published by an herald, or fixed in public places, that all might know the contents thereof; and take care not to assault the Jews, as it would be to their peril:

and that the Jews should be ready against that day to avenge themselves
on their enemies;
Abendana thinks this is to be restrained to those that were of the seed of Amalek, who were their principal enemies; but no doubt it includes all that should rise up against them.