"Well, dear friends, you know that some men can do to the glory of God what to other men would be sin. And notwithstanding what brother Pentecost has said, I intend to smoke a good cigar to the glory of God before I go to bed to-night.
"If anybody can show me in the Bible the command, 'Thou shalt not smoke,' I am ready to keep it; but I haven't found it yet. I find ten commandments, and it's as much as I can do to keep them; and I've no desire to make them into eleven or twelve.
"The fact is, I have been speaking to you about real sins, not about listening to mere quibbles and scruples. At the same time, I know that what a man believes to be sin becomes a sin to him, and he must give it up. 'Whatsoever is not of faith is sin' [Rom. 14:23], and that is the real point of what my brother Pentecost has been saying.
"Why, a man may think it a sin to have his boots blacked. Well, then, let him give it up, and have them whitewashed. I wish to say that I'm not ashamed of anything whatever that I do, and I don't feel that smoking makes me ashamed, and therefore I mean to smoke to the glory of God."
HT: Gospel-Driven Church
Yeah, it is kind of a sticky subject, though - matters of conscience. It is crazy, to begin with, that God gave us individual conscience. And that we would be made subject, in part, to those consciences. What is sin to one person, may not be, to another. Crazy.