בַּיּוֹם֙ הָֽרִאשׁ֔וֹן מִקְרָא־קֹ֖דֶשׁ יִהְיֶ֣ה לָכֶ֑ם כָּל־מְלֶ֥אכֶת עֲבֹדָ֖ה לֹ֥א תַעֲשֽׂוּ׃
In the first day ye shall have a holy convocation; ye shall do no manner of servile work.
Read kabbalistic (mystical) interpretation of Leviticus 23:7: and classical mystical sources.