A soul under the power of conviction from the law is pressed to fight against sin, but hath no strength for the combat. They cannot but fight, and they can never conquer; they are like men thrust on the sword of enemies on purpose to be slain. The law drives them on, and sin beats them back. Sometimes they think, indeed, that they have foiled sin, when they have only raised a dust that they see it not; that is, they distemper their natural affections of fear, sorrow, and anguish, which makes them believe that sin is conquered when it is not touched. By that time they are cold, they must to the battle again; and the lust which they thought to be slain appears to have had no wound.
– John Owen –
from The Mortification of Sin in Believers, volume 6 of Works, page 20