Matthew 13:31-33

In Matthew 13:31-33 Christ gives the parables of the mustard seed and leaven.  In these parables Christ shows that the growth of the kingdom of God is certain even if it appears to be hidden at times.  The kingdom of God will start out small, but it will grow until it fills the entire world.  This ought to be a comfort to Christians who increasingly find themselves in a world of unbelief.