Killing a Nazi who has entered your home, even in self-defense, is a tragedy - saying you wouldn’t lie to a soldier but then you would kill the guy(??!) makes no moral sense. Basically what is being said there is that it’s OK to kill in self-defense but not to lie in self-defense.
.
One must “always distinguish”.
Murder is intrinsically disordered.
Killing is not intrinsically disordered.
Killing in self defense can be justified it is not murder.
Capital punishment can be justified it is not murder.
Lying too is intrinsically disordered it can not be justified.
A legit mental reservation or discreet speech is not lying - it can be justified.
We are discussing the “nature of a lie” here.
Faced with a Nazi at the door…
One can make use of say a mental reservation such as the kind used when someone calls and asks if so and so is home and one says no (with the understandable meaning of “he is not home for you to talk with”. Or other similar thing.
But most of us would likely not even be able to do such…and might fall into a little lie.
Lying to a Nazi at the door – is for the person either:
- A slight venial sin (due to it being a lie) mitigated by the fear etc into a very slight venial sin quickly forgiven. (God knows our weakness…and he sees all the aspects involved here)
- Objectively a slight venial sin (due to it being a lie) but subjectively due to an error in not recognizing it as a lie but seeing it as good not subjectively a sin even in the least.
- Objectively a slight venial sin but subjectively not an actual sin due to various reasons.
But it is important to note that objectively it would still be a lie.
Or it may not be a lie.
- Objectively not a sin at all due to it being a “different moral object” than lying. Such I leave to the professional moral theologians and of course to the Magisterium of the Church to determine.
It is important to note that if such could be argued…it would not be the intention or circumstance that “justifies” a lie (such can not happen) but rather such and such was not a lie (the moral object is different). Just like the taking of food in extreme circumstances can be “simply not theft”. It is not that the theft is ok due due to the circumstances…but rather it is “simply not theft” due to the universal destination of goods etc (see CCC).