'Seed' in the Bible

Now to Abraham were the undertakings given, and to his seed. He says not, And to seeds, as of a great number; but as of one, he says, And to your seed, which is Christ.

What then is the law? It was an addition made because of sin, till the coming of the seed to whom the undertaking had been given; and it was ordered through angels by the hand of a go-between.

And if you are Christ's, then you are Abraham's seed, and yours is the heritage by the right of God's undertaking given to Abraham.

Be not tricked; God is not made sport of: for whatever seed a man puts in, that will he get back as grain.

Because he who puts in the seed of the flesh will of the flesh get the reward of death; but he who puts in the seed of the Spirit will of the Spirit get the reward of eternal life.