Why are some books considered holy while others are not? What does it take for a book to be considered scripture? Can some books be considered inspire

I think that depending on your religion if they say that the book is holy then you can think it's holy. But if it's something you read a lot, and not just a book that you read once in your life but one that you are reading quite a lot. But not twilight, that is NOT a holy book. And if it has good teachings and stuff like that