The laws are concerned with setting and enforcing the penalties for transgressions at all levels of society; the severity of the fine depended on the social rank of the victim. The king had a financial interest in enforcement, for part of the fines would come to him in many cases, but the king also was responsible for law and order, and avoiding blood feuds by enforcing the rules on compensation for injury was part of the way the king maintained control. Æthelberht's laws are mentioned by Alfred the Great, who compiled his own laws, making use of the prior codes created by Æthelberht, as well as those of Offa of Mercia and Ine of Wessex.