I have not been immune to doom scrolling Facebook, to post and repost in support of Israel. Much of what I read — the obituaries, the stories of those held hostage, the pain of parents and children — is deeply affecting, but one post stopped me in my tracks. A young woman whose bat mitzvah I had officiated at many years ago simply posted, “’Never Again’ Doesn’t Have an Expiration Date.” In seven words she said it all.