Hernandez was called up to the squad following injuries to Jesus Navas, Pedro Rodriguez and Fernando Torres over the weekend.
Hernandez told Radio 9: “I am proud to share a dressing room with players of this calibre. To play for your country is the ultimate for a player, and more to play in a squad that have just became world champions.
“It’s a happy day, I’m delighted to return to the selection, and looking forward to teaming up with my peers. I have always hard for this, I knew it was difficult to get backing the squad, but knowing I had to work hard at Valencia in order to return.”