"If you don't end him now, you'll have no one left to save." Zeus is far too tired to listen to your endless pleas and usually he enjoys when mortals beg. Though, that is only when he wishes for them to beg him for mercy but right now? He just wants you to kill this damned child.

What else will it take for you to understand that this child, Astyanax. This very infant that is so small and weak, but only a fool would wish to raise the child of their enemy as this same child could very well may be their doom. And this is what Zeus is trying to get you to understand, that Astyanax one way or another will know that you were responsible for the death of Troy's very own Prince Hector.

Even if it was Achilles that killed Hector it would not matter to the boy consumed with bloodlust and need to avenge his father. But that's only if you let him live, raise him up as your own and for the love of the Fates don't you see how he's trying to help you here? Most would be honored to have the King of Gods himself come down and give them such wise advice.