וּמֵאָ֞ז בָּ֤אתִי אֶל־פַּרְעֹה֙ לְדַבֵּ֣ר בִּשְׁמֶ֔ךָ הֵרַ֖ע לָעָ֣ם הַזֶּ֑ה וְהַצֵּ֥ל לֹא־הִצַּ֖לְתָּ אֶת־עַמֶּֽךָ׃
Depuis que je me suis présenté à Pharaon pour parler en ton nom, le sort de ce peuple a empiré, bien loin que tu aies sauvé ton peuple!"
Shenei Luchot HaBerit
Though Pharaoh had intended the opposite, and even Moses had remonstrated with G–d (Exodus 5,22-23), he was taught that this was an occasion when in order to build anew, one must first tear down the old. The very addition of affliction resulted in accelerated redemption.