In a particularly cruel plan to find out what she knows and what the cops might be able to get out of Ida, Pinkie courts and marries her having correctly surmised her station in life (naive and innocent which he thinks means dopey, doomed sucker) and all the ways she can be taken advantage of and swept off her feet.
After they are married Ida sees a novelty attraction on the boardwalk where you can record messages and give them to friends. Ida asks Pinkie to make one for her and he complies. Inside the glass booth with Ida watching him speak, but unable to hear what he says, Pinkie records his message for Ida and because she asked him to, he speaks from his heart...
You asked me to make a record of my voice. Well here it is. What you want me to say is 'I love you.' Here's the truth: I hate you, you little slut. You make me sick.
We watch him relishing the pain it's going to cause her when she hears it, and we watch him watching her watch him speaking special private and true words only for her from the heart of her husband whom she loves. It hurts us.
The nun tries to comfort her, "You can't understand, nor I, nor anyone for that matter, the appalling strangeness of the mercy of God... You say he loved you. There's hope."
"What you want me to say is 'I love you.' skip I love you skip I love you skip I love you skip I love you."
Some among the audience may foster some contempt for her and see the stubbornness of her faith dooming her to a life of not-knowing-things, but others will see the strength of her convictions being rewarded by the 'appalling strangeness of the mercy of God'.