Esth.9.23

And the Jews undertook to do as they had begun, and as Mordecai had written unto them;

Esth.9.23

And they did it. What started then became a tradition, continuing the practice of what Mordecai had written to them. [JC]

Esth.9.23

So the Jews accepted the custom which they had begun, as Mordecai had written to them,

Esth.9.23

So the Jews adopted Mordecai's suggestion and began this annual custom.