'Seed' in the Bible

And Haman recounted unto Zeresh his wife and all his friends everything that had befallen him. Then said his wise men and Zeresh his wife unto him, If Mordecai, before whom thou hast begun to fall, be of the seed of the Jews, thou shalt not prevail against him, but shalt surely fall before him.

the Jews ordained, and took upon them, and upon their seed, and upon all such as joined themselves unto them, so that it should not fail, that they would keep these two days according to the writing thereof, and according to the appointed time thereof, every year;

and that these days should be remembered and kept throughout every generation, every family, every province, and every city; and that these days of Purim should not fail from among the Jews, nor the remembrance of them perish from their seed.

to confirm these days of Purim in their appointed times, according as Mordecai the Jew and Esther the queen had enjoined them, and as they had ordained for themselves and for their seed, in the matter of the fastings and their cry.

For Mordecai the Jew was next unto king Ahasuerus, and great among the Jews, and accepted of the multitude of his brethren, seeking the good of his people, and speaking peace to all his seed.