You think God broke His own law, like the jews do? You think king David broke the law? You think he, amd ultimately Jesus, descend from incest?

Deuteronomy 23:3
“No Ammonite or Moabite shall enter the assembly of the Lord; even to the tenth generation none belonging to them shall enter the assembly of the Lord for ever;

Ezra 9:1
The people of Israel and the priests and the Levites have not separated themselves from the peoples of the lands with their abominations, from the Canaanites, the Hittites, the Per′izzites, the Jeb′usites, the Ammonites, the Moabites, the Egyptians, and the Amorites. 2 For they have taken some of their daughters to be wives for themselves and for their sons; so that the holy race has mixed itself with the peoples of the lands