Helen sent Susan and me a page from her Mussar book, and asked “What does this mean?”
For some reason (probably because I was reading Fishbane) I found this question inspiring, and gave a reply that I want to capture here:
First, understand, there won’t be a factual answer. It will be more a tilt of understanding.
The best thing is to struggle. Ask yourself some questions: “The vengeance was toward Egypt via the waters, not toward the waters per se. Gratitude prevented Moses from using waters as an instrument of vengeance. Where have I seen situations where gratitude impedes vengeance?”
Or “Is there always collateral damage in seeking vengeance? Where have I seen it? How can I link gratitude to choosing not to be violent?”
Or “If we have a deep feeling of all-encompassing gratitude, is vengeance even possible at all? Is violence? Is hatred? What happens to our moral and emotional disposition if gratitude dominates our moral disposition?”
That is how to wrangle with sacred texts and commentaries.
Does that help at all? You should spend around 10 minutes meditating in self-dialogue of this kind for every minute you spend reading. Maybe even start by writing yourself questions. The tilt in understanding actually happens in the thrust of questions you discover to ask yourself.
Every factual statement we hear gets its meaning from an implied question. Most misunderstandings can be reduced to hearing a statement as answering a question the statement was not meant to answer. In philosophy we are trying to acquire conceptions capable of posing unasked questions and producing novel answers.