You would count him unworthy the name of a friend who, knowing a thief or an incendiary to lurk in your family with a design to kill, or rob, or burn your house, would conceal it from you, and not acquaint you with it in his own accord. There is no such thief, murderer, incendiary, as sin… Silence or concealment in this case is treachery. He is the most faithful friend, and worthy of most esteem and affection, that deals most plainly with us in reference to the discovery of our sin. He that is reserved in this case is but a false friend, a mere pretender to love, whereas, indeed, he hates his brother in his heart. (Leviticus 19:17).
David Clarkson