"'Jer. 31:33 states that the law is written on our hearts'

Which would be impossible since it is only a muscle.

'but the 10 commandments'

With four useless rules "You shall not worship other god, you shall not make graven image, you shall not say the lord's name in vain and you shall not work on the sabbath". Could have at least included : Don't rape.

But again, not one iota of the old laws shall change, the laws of israel included, until earth and heaven are no more."

An atheist said this to me, and he was serious.