According to The Bible, Adam and Eve had mentioned-by-name sons - Cain, Abel and Seth.
But according to Genesis 5:4 Adam also had other sons and daughters.
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Adam's Sons and Daughters in Genesis 5
This is the book of the generations of Adam. In the day that God created man, in the likeness of God made he him;
2 Male and female created he them; and blessed them, and called their name Adam, in the day when they were created.
3 And Adam lived an hundred and thirty years, and begat a son in his own likeness, and after his image; and called his name Seth:
4 And the days of Adam after he had begotten Seth were eight hundred years: and he begat sons and daughters:
5 And all the days that Adam lived were nine hundred and thirty years: and he died.