[The earth’s] history stretched indefinitely or even infinitely into past and future and involved no unique and unexplained events such as the Flood; indeed, earth history was “without vestige of a beginning, without prospect of an end.” […] Most significantly, the virtual eternalism of such theories was extended, often explicitly, to the history of mankind[…]. Mankind could thus be claimed as uncreated and therefore not subject to any of the traditional moral and social constraints.
Source: wiktionary