Esther 4:3

4:3 Throughout each and every province where the king’s edict and law were announced there was considerable mourning among the Jews, along with fasting, weeping, and sorrow. Sackcloth and ashes were characteristic of many.

Esther 4:16

4:16 “Go, assemble all the Jews who are found in Susa and fast in my behalf. Don’t eat and don’t drink for three days, night or day. My female attendants and I will also fast in the same way. Afterward I will go to the king, even though it violates the law. If I perish, I perish!”