When Adam and Eve gave birth to Cain and Abel, as at that time there were only four people on earth I.e ( Adam, Eve, Cain, Abel). Bible said, Cain killed Abel and was cursed by God, leaving only 3 people on earth I.e ( Adam, Eve, Cain) but according to the Bible , Cain traveled to a town called Nod and married and gave birth to children with her. My question is, which other human did Cain marry since Adam and Eve were the only people created by God! Was there another creation we were not told about ? Please I need your answer

opethom:
When Adam and Eve gave birth to Cain and Abel, as at that time there were only four people on earth I.e ( Adam, Eve, Cain, Abel). Bible said, Cain killed Abel and was cursed by God, leaving only 3 people on earth I.e ( Adam, Eve, Cain) but according to the Bible , Cain traveled to a town called Nod and married and gave birth to children with her. My question is, which other human did Cain marry since Adam and Eve were the only people created by God! Was there another creation we were not told about ? Please I need your answer

isnt it obvious? Cain fukced his mother Eve na!

Cain married his sister , one of the female children of Adam.

Genesis 5:3-4 KJV
And Adam lived an hundred and thirty years, and begat a son in his own likeness, 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:

Genesis 6:4 read and understand.