'Seed' in the Bible

And Eli blessed Elkanah and his wife, and said, The LORD give thee seed of this woman for the loan which is lent to the LORD. And they went unto their own home.

And he will take the tenth of your seed, and of your vineyards, and give to his officers, and to his servants.

And Jonathan said to David, Go in peace, forasmuch as we have sworn both of us in the name of the LORD, saying, The LORD be between me and thee, and between my seed and thy seed for ever. And he arose and departed: and Jonathan went into the city.

Swear now therefore unto me by the LORD, that thou wilt not cut off my seed after me, and that thou wilt not destroy my name out of my father's house.