'Seed' in the Bible

and it came to pass, as he sowed, some'seed fell by the way side, and the birds came and devoured it.

And he said, So is the kingdom of God, as if a man should cast seed upon the earth;

and should sleep and rise night and day, and the seed should spring up and grow, he knoweth not how.

It is like a grain of mustard seed, which, when it is sown upon the earth, though it be less than all the seeds that are upon the earth,

Teacher, Moses wrote unto us, If a man's brother die, and leave a wife behind him, and leave no child, that his brother should take his wife, and raise up seed unto his brother.

There were seven brethren: and the first took a wife, and dying left no seed;

and the second took her, and died, leaving no seed behind him; and the third likewise:

and the seven left no seed. Last of all the woman also died.