'Seed' in the Bible

A man went out to put seed in the earth:

The seed is the word.

And he said, Such is the kingdom of God, as if a man put seed in the earth,

And went to sleep and got up, night and day, and the seed came to growth, though he had no idea how.

It is like a grain of mustard seed, which, when it is put in the earth, is smaller than all the seeds on the earth,

And all the seven had no seed. Last of all the woman herself came to her death.