Because it's always easy to blame other people, instead of ourselves. We are always looking, to see if we are being unfair. And we're trying to see if justice is at the center of our lives. Back in Paul's day, people wore sandals. Nowadays, people wear sneakers, or running shoes.
Some people wear big boots, in order to look tough.
That's an interesting idea. I can walk into the middle of an argument. I can walk into a jail cell, or into a dangerous place. I can walk into places where I know there are problems. And I don't even have to have all the answers.