Whose point of view should my book be written from?

I've asked the question once but am redoing it. The book is going to be the story of a culture spanning over eons. If I want to write it in first person with a single person I am limited to two immortal characters. The first is the king, he is descended from gods and is the creator god of the people, he is a giant and has to seem cold and untouchable the majority of the time. Even though he is a symbol for human creativity he can't seem human. If I wrote it from his point of view the book will seem like it is written by a sociopath, it will be emotionless and will not be relatable. The second option for first person is the queen. She was created by the king so someone who was immortal and human at the same time could rule with him. I don't want her present throughout the whole book though because after a falling out with the king she leaves and most of her returns will be attacks. That and by the end her immortality will make her as inhuman if not worse than the king. I could switch between points of view and write it from the points of view of her numerous descendent who rule after she leaves, but that will leave to many styles of writing. The ideas for the king and queen are going to stay the same, so I either need to find a way to make that work or come up with a new character. Any suggestions are appreciated.