Mark 4:26-29 - The Parable Of The Seed That Grows By Itself
26 And he said: So is the kingdom of God, as if a man should sow seed in the ground, 27 and should sleep and rise, night and day, and the seed should spring up and grow, he knows not how. 28 For the earth, of its own accord, produces fruit, first the blade; then the ear, then the full grain in the ear. 29 But when the fruit is ripe, immediately he sends forth the sickle, because the harvest is ready.