As a father has compassion on his children, so the LORD has compassion on those who fear Him. For He knows our frame; He is mindful that we are dust.
The replay tends to start when the house goes quiet. You go back over the last weeks, or the last phone call, and search for the moment where you could have changed the ending. If you had pushed for another test, driven over that evening or noticed the tiredness in their voice, perhaps they would still be here.