Exodus 9:5 Kabbalah

וַיָּ֥שֶׂם יְהוָ֖ה מוֹעֵ֣ד לֵאמֹ֑ר מָחָ֗ר יַעֲשֶׂ֧ה יְהוָ֛ה הַדָּבָ֥ר הַזֶּ֖ה בָּאָֽרֶץ׃

And the LORD appointed a set time, saying: ‘Tomorrow the LORD shall do this thing in the land.’

Read kabbalistic (mystical) interpretation of Exodus 9:5: and classical mystical sources.