Mark 4:30

and should sleep and rise night and day, and the seed should spring up and grow, though he doesn’t know how.

For the earth bears fruit by itself: first the blade, then the ear, then the full grain in the ear.

But when the fruit is ripe, immediately he puts in the sickle, because the harvest has come.”

It’s like a grain of mustard seed, which, when it is sown in the earth, though it is less than all the seeds that are on the earth,

yet when it is sown, grows up and becomes greater than all the herbs, and puts out great branches, so that the birds of the sky can lodge under its shadow.”

With many such parables he spoke the word to them, as they were able to hear it.