Recently, I have heard people using a seaman's expression, "It happened on my watch". It refers to a time when it was their duty to notice what was going on, and take the appropriate action. Peter urges us to be 'on watch' all the time. Most car accidents happen, not by deliberately reckless driving, but by a lapse of concentration or a moment of inattention. That is also the most common way in which followers of Jesus fall into the devil's trap. They do not set out to be wicked; they just take their eye off the road of holiness.