Sanhedrin 106a says: “She who was the descendant of princes and governors played the harlot with carpenters.” There is Biblical support for this view of Enosh/Nok as familial "head" in Psalm 8:4 which reads, “What is man [enosh] that you are mindful of him, the son of man [ben adam] that you care for him?” The parallelism of the Hebrew makes it clear that the historical Enosh is regarded as progenitor just as the archetypal Adam is regarded as progenitor. This indicates that the first born sons of Cain and Seth were named after the same ruler.They cannot be used to count generations because they are king lists and some kings ruled simultaneously, others ruled for short periods, and still others ruled for longer than a generation (40 years).Error #2 Ussher did not recognize that some of the genealogical lists are telescopic. Such lists give the names of only the most famous rulers.They calculate the earth's age at 6000 years on the basis of ages assigned to these rulers.
Error #4: There are various the king lists, depending on the group of people. Some lists provide the names of the first born sons of the half-sister brides. Linsley Young Earth Creationists use Archbishop James Ussher’s chronology to date the age of the earth.They believe that the genealogies in Genesis 5 and 11 are chronological, enabling them to arrive at an approximate date of creation of the whole universe.This means that we cannot use the genealogies to date the earth.
Error #3: Ussher did not understand that the rulers listed had two wives so there were two first-born sons.
The biblical record often speaks of two different people who had the same name. It can no longer be claimed that these rulers did not live in history.