avidbiblereader:
Notice Romans 2:14,15 . 14 Even Gentiles, who do not have God’s written law, show that they know his law when they instinctively obey it , even without having heard it. 15 They demonstrate that God’s law is written in their hearts, for their own conscience and thoughts either accuse them or tell them they are doing right.
His conscience is accusing him that is why he is coming to you and looking for your forgiveneness and approval.
This wasn't like he was screwing his neighbor or the girl at school, this is BLOOD, it is inheritantly wrong EVERYWHERE, I know of prominent witness who married his first cousin once removed. They lied at the courthouse becasue they knew it was wrong and every where they go every witness just frowns and shreiks. It is gross no matter what they look like.
It's easy to pull out a scripture to pass judgement on others isn't it? How about Genesis 4:1? Or Genesis 20:12? Apparently they didn't know that it is "inherently wrong EVERYWHERE". And god didn't seem to mind too much about it either.