like 80% of judaism are just cultural jews/boring deists who go to synagogue and have overbearing moms, the other 20% think so. as for christianity the "law" of the old testament in classic augustinian/pauline theology was intimately tied to the old covenant god made with abraham via "sacrifice" o f isaac. when jesus came his sacrifice forged the new covenant which was fuller because jesus was truely sacrificed whereas isaac was replaced w/ a ram or somthing.