Conflicting statements in the bible

[Godscreated]

Well, lets look at another famous "contradiction". (not really a contradiction per se but certainly unexplainable within the context of genesis.)

God creates adam and eve, they pork and have 2 sons. The sons are then sent off to far-away lands to "be fruitful and multiply".

Who, exactly did they multiply with?

This is not a contradiction in that one part of the bible says this and another part says that. It is a logical contradiction in that, according to the bible, there were only 4 people on earth at the time yet the sons were sent off and married to....who?

First of all you should actually read and understand what you've read before crying contradiction. Able was killed by Cain, Able never married. Important fact you missed, and you are trying to use a dead man to come up with a contradiction, I'm not saying it is but it looks like a con being planned. Second the Garden of Eden was off limits to all humans, the curse of sin was brought into the world by Adam and Eve that caused this to be.
Now how do you know there were only four people in the world when Cain killed Able, scripture says Adam and Eve had many children, both male and female. We are not told anything about how old the brothers were when the murder took place.
Adam and Eve lived several hundred according to scripture and scripture says nothing about when their children were born. It does however point toward Cain and Able being the first two born.
With what the scriptures state we can only come to the conclusion that Cain married one of his sisters and actually the scriptures point to the brothers and sisters of Adam and Eve marrying and having children and those children were grown before Cain was sent away by God.