I would point out that the Old Testament questions you ask about - are pretty small compared to the context of what is being said. The numbers could have been inflated or not. The Jews were notorious in not noting women and offspring, even in the Patriarchal line. Jesus was born without original sin. What process God used for that is a mystery. But Jesus' earthly father was Joseph - why else would the book of Matthew claim that Christ geneology to the Patriarchal line of David was thru Joseph's blood? Jesus is referred to in the gospels, as the carpenter's son. Unlike many, I don't think original sin was about sex. Jesus was born without the taint that mankind brought on themselves. That is heart of the scripture.