וַיָּבֹ֗אוּ שֹֽׁטְרֵי֙ בְּנֵ֣י יִשְׂרָאֵ֔ל וַיִּצְעֲק֥וּ אֶל־פַּרְעֹ֖ה לֵאמֹ֑ר לָ֧מָּה תַעֲשֶׂ֦ה כֹ֖ה לַעֲבָדֶֽיךָ׃
Then the officers of the children of Israel came and cried unto Pharaoh, saying: ‘Wherefore dealest thou thus with thy servants?
Read kabbalistic (mystical) interpretation of Exodus 5:15: and classical mystical sources.