'Grain' in the Bible

Jesus was going through the grain fields on a Sabbath, and his disciples began to pick some heads of wheat as they made their way.

Other seed fell among the thorns, and they grew up and choked it, and it did not produce grain.

But other seed fell on good soil and produced grain, sprouting and growing; some yielded thirty times as much, some sixty, and some a hundred times."

By itself the soil produces a crop, first the stalk, then the head, then the full grain in the head.

And when the grain is ripe, he sends in the sickle because the harvest has come."