The Parable of the Growing Seed

Mark 4:26-29

And he said, So is the kingdom of God, as if a man should cast seed upon the earth;

and should sleep and rise night and day, and the seed should spring up and grow, he knoweth not how.

The earth beareth fruit of herself; first the blade, then the ear, then the full grain in the ear.

But when the fruit is ripe, straightway he putteth forth the sickle, because the harvest is come.