In the Hallel prayer we recite this verse: "This is the day G-d wrought, we will rejoice in it/Him." The Midrash asks about this last word: Is it "it," or "Him?" That is, are we supposed to rejoice in the day, or in G-d?
In Egypt the Jewish People didn't change their names, their dress, or their language. They were a very conspicuous minority. As we began - so we continue...
Sarah relinquished her rights (mechila) to her ketuba in order to encourage her husband, Reuven, to give her a get. Now she wants to back out of this step. Perhaps we should say that simple oral mechila without a kinyan is not effective when the creditor (i.e., the wife) still has a document (i.e., the ketuba) that states that the debtor owes her money.
Through Brit Mila we declare to the entire world that we, the Jewish people, continue to be firm in our faith and ready to sacrifice ourselves until we have reached the materialization of all of our upright and just aspirations.