'Seed' in the Bible

And these are those going up from Tel-Melah, Tel-Harsa, Cherub, Addan, Immer, and they have not been able to declare the house of their fathers, and their seed, whether they are of Israel:

for they have taken of their daughters to them, and to their sons, and the holy seed have mingled themselves among the peoples of the lands, and the hand of the heads and of the seconds have been first in this trespass.'