Gal Galatians, chapter Epistle to the Galatians, chapter 3
If someone should ask, “When God gave his laws to Moses long after he told Abraham what he was promising to give to him, was he changing his mind?” I would reply that God certainly did not change his mind when he did that! If God had given a law that could enable people to live eternally, then it actually would be because of people obeying that law that God would erase the record of their sins.