God has rejected many of the Jews [MET], like branches of a tree are broken off {like people break off dead branches of a tree}. And each of you non-Jews whom God has accepted is like [MET] a branch of a wild/uncultivated olive tree that was {that someone} grafted among the branches (OR, onto one of the branches) that were left on a cultivated olive tree. God has caused you to benefit from how he blessed our(exc) first Jewish ancestors, as branches benefit from the nutritious sap from the roots of a cultivated olive tree [MET].