“Listen to this! Behold, the sower went out to sow; as he was sowing, some seed fell beside the road, and the birds came and ate it up. Other seed fell on the rocky ground where it did not have much soil; and immediately it sprang up because it had no depth of soil. And after the sun had risen, it was scorched; and because it had no root, it withered away. Other seed fell among the thorns, and the thorns came up and choked it, and it yielded no crop. Other seeds fell into the good soil, and as they grew up and increased, they yielded a crop and produced thirty, sixty, and a hundredfold.” (Mark 4:3-8, NASB)

And He was saying, “The kingdom of God is like a man who casts seed upon the soil; and he goes to bed at night and gets up by day, and the seed sprouts and grows-how, he himself does not know. The soil produces crops by itself; first the blade, then the head, then the mature grain in the head. But when the crop permits, he immediately puts in the sickle, because the harvest has come.”

(Mark 4:26-29, NASB)