Ezekiel 3:21
"Nevertheless if thou warn the righteous man, that the righteous sin not, and he doth not sin, he shall surely live, because he is warned; also thou hast delivered thy soul."
One of the greatest things lacking in Christianity today is responsibility. Too many Christians want a Christianity that is nothing more than a religious penance that they pay once a week by going to church, and the rest of the week doing what they want. Christianity is far more than a penance. Because you are saved, you have a responsibility to others.