Answer:
Some benefits are that you can then learn what seems to be true. If multiple sources say the same things in some way, it's probably true. Also, some sources may contain more and/or clearer information than others. Some may include quotes others cannot provide, have pictures, and maybe even videos. The more sources you have, the more (accurate) information you can get.
Because Hrothgar did a favor for his father and he felt like he owed him and he is also is show-off .
