They are classified as the Lilim, half demons whom are responsible for bringing misfortune to all mankind.
Gen:4:22: And Zillah, she also bare Tubal-cain, an instructer of every artificer in brass and iron: and the sister of Tubal-cain was Naamah. Tubal-Cain is a descendant of Adam and Eve through Cain.
He has a sister.
Adam doesn't have a sister, but he has a younger brother named Neil.
The bible does not say exactly how many children Adam and Eve had .But they had sons and daughters beside Abel and Cain, so Cain married his sister.
No, Adam did not have a sister. God put Adam in a deep sleep since he was lonely, took out one of his ribs, and created a wife for Adam out of it and named her Eve.
Adam Lambert doesn't have a sister.
Celie's two children who lived in Africa with her sister were Olivia and Adam.
learning from examples
Adam doesn't have a sister, but he has a younger brother named Neil.
Adam doesn't have a sister, but he has a younger brother named Neil.
Yes it must have been, because that was the only option for the children of Adam and Eve.
No they had other children beside those mentioned, Cain married his own sister.