What does this line mean?

When I was a child there was a member of our local Church who would carry a very large Bible. He would walk very slowly, chin in the air. Looking like a pea. Showing off. Prayed louder than everybody. He basked in the attention. He worked for a President. He later got in big trouble for stuff he had done. He stopped coming to Church. It seems like he didn't get the idea of what Church was for. That we are all sinners. His pride made him ashamed to attend. He prayed for exhibition, not for God.