I don't know if you would call it foreshadowing or not, but at the Council of Elrond I began to distrust Boromir. There are a couple of hints as to his future actions. When Frodo shows them all the ring, "Boromir's eyes glinted as he gazed at the golden thing." And then after all had spoken and despite Gandalf's long narrative, Boromir still wants to keep the ring. "Let the ring be your weapon if it has such power as you say. Take it and go forth to victory"
So we have an early glimpse of which way he is leaning, and when he is made one of the nine, this becomes very important. One knows he is going to do something.
Frodo's sword WAS broken in the attack by the wraiths, because just before they leave, Bilbo gives Sting to him for his long journey, as Frodo's sword was never reforged, and there was now no time. They are now about to depart on their long journey. But oh what a wonderful rest they had at the Last Homely House.
So we have an early glimpse of which way he is leaning, and when he is made one of the nine, this becomes very important. One knows he is going to do something.
Frodo's sword WAS broken in the attack by the wraiths, because just before they leave, Bilbo gives Sting to him for his long journey, as Frodo's sword was never reforged, and there was now no time. They are now about to depart on their long journey. But oh what a wonderful rest they had at the Last Homely House.