Hrothgar asked Beowulf to battle Grendel's mother because the king believed he was the only man capable of dealing with such monsters. This was because Beowulf had earlier succeeded in mortally wounding Grendel. Further, Hrothgar wanted revenge for his close friend.
They represent the different levels of sin. Hope this helps! ^^
The purpose of King’s letter is to cause negotiation to fight crisis.
A compound sentence and a compound verb