The Parable of the Growing Seed

²⁶ He also said, “This is what the kingdom of God is like. A man scatters seed on the ground. ²⁷ Night and day, whether he sleeps or gets up, the seed sprouts and grows, though he does not know how. ²⁸ All by itself the soil produces grain—first the stalk, then the head, then the full kernel in the head. ²⁹ As soon as the grain is ripe, he puts the sickle to it, because the harvest has come.”

New International Version (NIV) - for other versions see BibleGateway.com