Jeremy Shamos' character is upstairs, sitting on the bed, and he's reading a text message that he had received from his daughter (I guess a few months ago) when she was in Israel and apparently had a nervous breakdown. As he's reading her words aloud, the actor playing his father, a stroke victim, comes out of a comatose state and begins saying the words along with Shamos. Then Shamos drops out, and the father continues the monologue by himself.
I was guessing that the playwright was drawing a parallel between the father's WWII experience of freeing the concentration camp victims and the young girl's experience in the Holy Land, but I'm still confused. I wish I could read the monologue now. It wasn't making too much sense to me while I was listening.