A farmer went out to scatter seed in a field. While the farmer was doing this, some of the seeds fell along the road and were stepped on or eaten by birds.
I tell you for certain that a grain of wheat that falls on the ground will never be more than one grain unless it dies. But if it dies, it will produce lots of wheat.
Jesus also said: The kingdom of heaven is like what happens when a woman mixes a little yeast into three big batches of flour. Finally, all the dough rises.