וַתִּכְתֹּ֥ב בַּסְּפָרִ֖ים לֵאמֹ֑ר קִֽרְאוּ־צ֔וֹם וְהוֹשִׁ֥יבוּ אֶת־נָב֖וֹת בְּרֹ֥אשׁ הָעָֽם׃
Assim escreveu nas cartas: Apregoai um jejum, e ponde Nabote diante do povo.
Rashi on I Kings
Proclaim a day of fasting. On a fast day it was their custom to examine their sins.