Ragnar issues the challenge to Earl Haraldson who initially declines on the grounds Ragnar is a criminal. He remembers what the soothsayer told him however and decides to accept. A pregnant Lagertha, fearing that Ragnar is too weak to win, thinks they should just run away.
Incumbent. The incumbent, in politics, is the existing holder of a political office. This term is usually used in reference to elections, in which races can often be defined as being between an incumbent and non-incumbent.
An entity that is currently in power. An incumbent company is an organization that has been providing goods and services for some time. In politics, the incumbent senator is the person who currently holds that office. See ILEC.