9Turpitudinem sororis tuæ ex patre sive ex matre, quæ domi vel foris genita est, non revelabis.
Commentary on this verse
By Henry MacLagan
Verse 9. Neither is it lawful to profane the truth by contamination with falsity in the understanding, proceeding either from interior hereditary affection, or from exterior, which falsity has become active in the internal or external man spontaneously.