Faith is not simply a private matter, or something we practice once a week at church. Rather, it should have a contagious effect on the broader world. Jesus used these images to illustrate His kingdom.: a sprinkle of yeast causing the whole loaf to rise, a pinch of salt preserving a slab of meat, the smallest seed in the garden growing into a great tree in which birds of the air come to nest.
Philip YanceyCuriously, the righteous Pharisees had little historical impact, save for a brief time in a remote corner of the Roman Empire. But Jesus' disciples - an ornery, undependable, and hopelessly flawed group of men - became drunk with the power of a gospel that offered free forgiveness to the worst sinners and traitors. Those men managed to change the world.
Philip YanceyI have more appreciation for why the Bible avoids fuzzy psychologisms and says simply to the stealer, "Steal no more," and to the tempted, "Flee temptation." The Bible challenges us to look upward, not inward, for counsel at moments of crisis.
Philip Yancey