for the earth bears fruit by itself: first the blade, then the ear, then the full grain in the ear.
This verse shows the gradual order of growth. First comes the blade, then the ear, then the full, ripe wheat in the ear. This process teaches us that the work of the kingdom of God often requires time. In spiritual life as well there is a course of development. A person does not always reach maturity all at once. At first there are small signs, then clearer forms, and in the end, mature fruit. This patient process must not be despised. God works not with hurried confusion, but with wise order. At the same time, the phrase “the earth bears fruit by itself” does not mean a process independent of God, but that God has placed an inner power of growth that works by His will. This verse is a great comfort for those who see small beginnings and become discouraged. God knows how the small sprout is brought to fruitful maturity.