The parable is about two different reactions to God’s grace. On one hand is the reaction of the lowest of the low—tax collectors, prostitutes, and sinners. On the other hand, you have the seemingly perfect and upright Pharisees. To one group, the mercy expressed in the three Parables of Luke 15—the lost sheep, the lost coin, and the lost son, commonly known as the Prodigal Son—is amazing. It’s a tale of love and grace, even for the vilest of the vile. To the other, it’s a story of stupidity, of frugality, of weakness. If you’ve been around church for any length of time, you know which is which. The Pharisees see this divine grace as completely absurd. The sinners, on the other hand, rejoice in it. The message is pure Gospel: God has pity on those dead in their sins. He receives sinners and eats with them.
Who has ever felt worthless, insignificant? Depression eats away at our hearts and minds. So many people, Christians included, feel as if they don’t matter at all to anyone in this world, or even to God Himself. In a world filled with people who seem more popular, more special, more valuable, it’s easy to feel like one sheep among a hundred, one coin among ten.