Matthew 13:31-33

Then Jesus told another story: “The kingdom of heaven is like a mustard seed that a man planted in his field. That seed is the smallest of all seeds, but when it grows, it is one of the largest garden plants. It becomes big enough for the wild birds to come and build nests in its branches.” Then Jesus told another story: “The kingdom of heaven is like yeast that a woman took and hid in a large tub of flour until it made all the dough rise.”