You would count him unworthy of 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 on 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.

—David Clarkson
The Works of David Clarkson, 2:216.