IRENÆUS having enquired why the Law was ever given, seeing that
Paul declares it to be injurious: S. Ambrose replies that it
would have been useless, had we kept that natural law which is
written on our hearts, and is found even in infants; but that,
this being broken, the former became necessary, that it might
take away all excuse by its manifestation of that sin which was
afterwards removed by the grace of Christ.