If we are all God's children, then was Jesus not inbred?

Talk about God and Mary, but then God does seem to turn a blind eye to it, like with Lot and his daughters. How can this be explained, except that God is sick. He let it happen in the Old Testament (while destroying Sodom and Gamorah for sin at the same time as the - Lot) and then again in the New Testament he commits adultery with his own daughter Mary and has an inbred son. Wow, what a guy that God is, should be locked up.