When people amass fortunes or are called "Reverend", they tend to forget to bow their heads. Those who practice faith should become more humble as they receive more virtue. The nail that juts out is apt to be driven in. So it is often said not to bang your head. Banging one's head against heaven is the worst thing. You may think that heaven is high above and it is impossible to bang your head. But be careful. If you are arrogant, divine blessings are surely withdrawn.