I received the following question:

Is 2 Samuel 13:37 speaking of David mourning for his son even though his name isn’t actually in the text?

Absalom’s son is not the one who died here, so it makes sense to supply the ellipsis with “David.” He was the one whose son had died, so he must be the one who mourned for his son Amnon every day. David had a very sensitive heart, and loved each one of his children, though some of them like Amnon were not good men.