There are several types of third-person points of view in storytelling. These are the third person limited or subjective, the multiple third people limited, as well as the third person omniscient points of view. The third person omniscient point of view considers all points of view as one. It shall look at the story from all angles and viewpoints, with nothing held back as in the other types of view. It therefore offers the author a few important advantages.
This happens to be the most traditional style of writing. Many of the stories we have always been told, since childhood, were made using the third person omniscient point of view. The author wasted no time in telling you all the details in the scenes. This is why people find it easy to consume stories told through this style. You wish to read more about the story when you notice this perspective in action.
As the author, you will also have the freedom to extend the scope of the story by revealing more about many characters. Through this perspective, the author can see and tell of the thoughts and actions an reactions of all characters, which makes getting the meaning of the story much easier. You will get to know how each character felt about something that happened to all of them. You thus get to understand the motivations for certain actions by different characters better.
This style is also the best for carrying the authoritative voice of an author. The other styles of storytelling do not have as diverse a channel through which the story can be expressed. But with the omniscient point of view, the author gets to carry the day through the portrayal of all the perspectives. As an author, you dictate how the story shall unfold. Your voice is inseparable from the story you are telling.
You also need to adopt this point of view if you are telling an epic story. There is no better style to tell a story that covers many years, with many characters in it, across vast lands and territories. You cannot pull the same feat using the other limited points of view. Those work best in shorter, less fascinating pieces of writing. If you have a great epic; you now know what method to go for.
This point of view is also good for portraying the action in your story. Since you can take a more distant and higher perspective stance, you can showcase all the actions of your characters. Action usually takes more than one person or thing to come across. It is therefore hard to tell about it when you can only see through one person’s eyes.