No, it does not. If you would take the time to read the scriptures in context and understanding of the culture of that time, you wouldn’t make such an ignorant statement or spout off atheist rhetoric.
“Note that throughout the Old Testament no rape victim is ever recorded as being forced to...
So are you saying Genesis is wrong?
Hint: Iscah is Sarah.
If a 10 year old (Abraham) has a sibling old enough to have children (Nahor), the child of this sibling (Sarah) would grow up to be ten years younger than her uncle (Abraham).
It appears, however, that she was a daughter of Terah by a different mother from the mother of Abram. The language of 20:12 would indeed admit of her being Abram's niece, but the fact that there was but 10 years' difference between his age and hers (Genesis 17:17) renders this hypothesis less...