The parable of the Prodigal Son is not actually about the prodigal son, but rather, it's a story about a father and his two sons. So many followers of Yeshua believe they are good, moral and ethical people, but then they judge everyone else who isn't as good as they see themselves. Yeshua tells this parable to help us not act like the Elder Brother in the story and learn to show grace to those who need it most.