But you, brothers, don't be weary in doing well.

 But in spite of his love for and trust in men Paul was a realist. The faith, he said, is not for everyone. We can be certain that he said it not cynically but sorrowfully. Once again we see the tremendous responsibility of free-will. We can use it to open our hearts and we can use it to shut them. Faith's appeal is not selective, it goes out to every man; but the heart of man can refuse to respond. 