Martyn Lloyd-Jones on Sin
We tend to think of sin as we see it in rags and in the gutters of life. We look at a drunkard, poor fellow, and we say, there is sin. But that is not the essence of sin. To have a real picture and a true understanding of sin, you must look at some great saint, some unusually devout and devoted man, look at him there on his knees in the very presence of God. Even there self is intruding itself, and the temptation is for him to think about himself, to think pleasantly and pleasurably about himself and to really be worshiping himself rather than God. That, not the other, is the true picture of sin. The other is sin, of course, but ..., you do not see it in its essence. Or to put it in another form, if you really want to understand something about the nature of Satan and his activities, the thing to do is not to go to the dregs or the gutters of life. If you really want to know something about Satan, go away to that wilderness where our Lord spent forty days and forty nights. That’s the true picture of Satan, where you see him tempting the very Son of God. (Studies in the Sermon on the Mount [Grand Rapids: Eerdmans, 1977], 2:22–23)
From a sermon by Matthew Kratz, The Audience & Content of Prayer, 2/8/2010