David has wished before, multiple times, that he could take away Jack’s pain or give him a better life, better than their current living in a small secluded house in a middle of nowhere town with a handful of other people and little physical contact with the outside world, especially for Jack who was supposedly dead, but there aren’t many times he’s wished it more than now.
He’s sitting outside Jack’s room, next to the door because Jack had had a horrible screaming nightmare that seemed like it had gone right into a flashback, at least by the time David had gotten there, and to make things worse, Jack’s brain had told him that David wasn’t David, that he was someone else involved in what had happened to Jack when he was in prison, and anything he tried to do to help Jack wouldn’t work.
One of the many downsides to being in hiding was that there wasn’t anyone David could turn to who might be able to help Jack right now, no family and no one who Jack would be comfortable enough with, so David was half sitting guard on Jack’s room and half trying to be near if Jack needed anything and was in a state of mind where he knew who David was.
He really hated not being able to do much, or currently anything, to help Jack, who was so proud, through his trauma and his whole world basically finishing falling apart and was almost at the point of trying to ask God to help Jack, or to switch Jack and David’s places, but that might mess up the wider world more, but at least Jack would have a good family and a decent life, but he didn’t think God would listen, so he’d keep it just in his head.