Esther 9:31

to confirm these days of Purim in their appointed times, as Mordecai the Jew and Esther the queen had decreed, and as they had imposed upon themselves and their descendants, in the matter of the fastings and their cry.

Esther 4:3

In every province, wherever the king's commandment and his decree came, there was great mourning among the Jews, and fasting, and weeping, and wailing; and many lay in sackcloth and ashes.

Esther 4:16

"Go, gather together all the Jews who are present in Shushan, and fast for me, and neither eat nor drink three days, night or day. I and my maidens will also fast the same way. Then I will go in to the king, which is against the law; and if I perish, I perish."

Jonah 3:2-9

"Arise, go to Nineveh, that great city, and preach to it the message that I give you."

Treasury of Scripture Knowledge

Summary

To confirm these days of Purim in their times appointed, according as Mordecai the Jew and Esther the queen had enjoined them, and as they had decreed for themselves and for their seed, the matters of the fastings and their cry.

And for their seed

The fastings

Bible References

And for their seed

Esther 9:27
the Jews established, and imposed on themselves, and on their descendants, and on all those who joined themselves to them, so that it should not fail, that they would keep these two days according to what was written, and according to its appointed time, every year;

The fastings

Esther 4:3
In every province, wherever the king's commandment and his decree came, there was great mourning among the Jews, and fasting, and weeping, and wailing; and many lay in sackcloth and ashes.
Jonah 3:2
"Arise, go to Nineveh, that great city, and preach to it the message that I give you."