Not Luther,...but, a good jog to my memory...

I read, or should I say, re-read this the other day...

"Axiom: Lex necat peccatorem, non peccatum; evangelium necat peccatum, non peccatotem"

"The Law kills the sinner, not the sin; The Gospel kills sin, not the sinner."

Francis Pieper, Christian Dogmatics Vol. 1, p. 80