The festival became holy/ the festival commenced
The sanctity of the holiday has been violated.
("Song shall be to you as in a holy feast, and joy of heart, as when one goes in a procession to come to the mountain of the Lord, to the city of Israel" - Isaiah 30:29)
Translation
Expression (Hebrew)
הִתְקַדֵּשׁ הַחַג
Definition (Hebrew)
הֵחֵלָּה קְדֻושָּׁתוֹ שֶׁל הַחַג.
("הַשִּׁיר יִהְיֶה לָכֶם כְּלֵיל הִתְקַדֶּשׁ חָג וְשִׂמְחַת לֵבָב כַּהוֹלֵךְ בֶּחָלִיל לָבוֹא בְהַר ה' אֶל צוּר יִשְׂרָאֵל"- יְשַׁעְיָהוּ ל כט)