Whos! Is your faith shaken?<quoted text>
There is a problem here. The bitter water cannot cause an abortion if she isn't pregnant even if she is unfaithful.
So she isn't pregnant but she has cheated. The bitter water has no effect and the satisfied husband takes home his cheating wife.
That is a useless law for God to make up.
I would like to discuss the rest of your post because you are now looking at the Law of Jealousies from a secular POV.
Before we go there, however, I'd like to ask: Do you accept that I've made my case?