Sometimes, horse breaking is necessary to get horses to let themselves be ridden. Before such learning process is accomplished, a horse will normally reject attempts to ride it. You see, in order for a horse to submit to the will of human beings, the will of the horse must first be broken.
Sounds familiar, doesn't it? Our fallen human will must first be crushed to give way to the perfect will of our creator. It is only then we are rideable by our master...
