Exodus 5:6 Kabbalah

וַיְצַ֥ו פַּרְעֹ֖ה בַּיּ֣וֹם הַה֑וּא אֶת־הַנֹּגְשִׂ֣ים בָּעָ֔ם וְאֶת־שֹׁטְרָ֖יו לֵאמֹֽר׃

And the same day Pharaoh commanded the taskmasters of the people, and their officers, saying:

Read kabbalistic (mystical) interpretation of Exodus 5:6: and classical mystical sources.