1 In the ninth year, on the tenth day of the tenth month, the word of Hashem came to me:
vai-HEE d’-var a-do-NAI ay-LAI ba-sha-NAH ha-t’-shee-EET ba-KHO-desh ha-a-see-REE be-a-SOR la-KHO-desh lay-MOR
א וַיְהִי דְבַר־יְהֹוָה אֵלַי בַּשָּׁנָה הַתְּשִׁיעִית בַּחֹדֶשׁ הָעֲשִׂירִי בֶּעָשׂוֹר לַחֹדֶשׁ לֵאמֹר׃
24:1 On the tenth day of the tenth month
In the final chapter describing Yerushalayim’s downfall, the prophet mentions the date of the start of the Babylonian siege of Yerushalayim, describing it as the tenth day of the tenth month. This day, the tenth of the month of Tevet, is one of the four fast days mentioned in Zecharya (8:19) that were instituted after the destruction of the Beit Hamikdash, in commemoration of various stages of its destruction. Until today, Jews all over the world fast on the tenth of Tevet, to remember the Babylonian siege of Yerushalayim, to mourn over its destruction and to pray for it to be rebuilt.