in the lion the witch and the wardrobe what does aslan show Peter and why

Aslan takes Peter aside to show him the castle of Cair Paravel shining like a star at the mouth of the great river, where Narnia meets the sea. Aslan tells Peter that he will be the High King, since he is the first-born.

Dear Aslan,

I wrote you a poem you helped me get through my entire 9th grade year and i know it may seem akward but i believe in love at first sight i saw your posts and i fell in love i believe if you give me the chance i can truly show you that aslan is above all

I see you in my thoughts and dreams,
When I awake, how real it seems.
You aren't here to comfort me,
But soon I hope you will be.

No one truly knows or understands;
You have my heart in your hands.
My love is what you truly own.
Come soon and make our house a home.