'Offspring' in the Bible

But seeing many of the Pharisees and Sadducees coming to his baptism, he said to them, Offspring of vipers, who has forewarned you to flee from the coming wrath?

Offspring of vipers! how can ye speak good things, being wicked? For of the abundance of the heart the mouth speaks.

“Teacher, Moses said, if a man dies, having no children, his brother is to marry his wife and raise up offspring for his brother.

Now there were seven brothers among us. The first got married and died. Having no offspring, he left his wife to his brother.

Serpents, offspring of vipers, how should ye escape the judgment of hell?