A constitution is a statement of the basic principles and laws of a nation, state, or group, such as the U.S. Constitution. Another very common meaning of constitution is the physical makeup of a person. So think of a constitution as how a body (yours, the government's) is set up. If you have a strong constitution, it means you don't get sick very often.
I think the focus of the story is on Beowulf as a hero rather than a king because it is his heroic deeds that lead to him being offered the throne. Also to be king one must possess some type of heroic qualities in order to rule a land and its people.
After reading Beowulf, I came to conclusion that Nordic culture was full of heroism.The manâs courage was highly respected at that times. The Beowulf is more stressed on him being a hero rather than a king. The one to be a king has to have a courage and be able to be a hero. To be heard by people king has to be able to be a fearless leader, so that is the most important quality that Beowulf has.