'Offspring' in the Bible
"I'll place hostility between you and the woman, between your offspring and her offspring. He'll strike you on the head, and you'll strike him on the heel."
Later on, after Adam had sexual relations with his wife, she gave birth to a son and named him Seth, because "God granted me another offspring to replace Abel, since Cain murdered him."
along with seven pairs of the flying birds, male and female, in order to keep their offspring alive on the surface of all the earth.
Look!" Abram said, "You haven't given me any offspring, so a servant born in my house is going to be my heir."
The angel of the LORD also told her, "I will greatly multiply your offspring, who will be too many to count.
Generation after generation, every male among you is to be circumcised on the eighth day after his birth, including the servant born in your house or the one purchased from a foreigner, who is not of your offspring.
but God told Abraham, "Don't be troubled about the youth and your slave girl. Pay attention to Sarah in everything she tells you, because your offspring are to be named through Isaac.
Nevertheless, I will make the slave girl's son into a nation, since he, too, is your offspring."
When the flocks mated in front of the branches, they would bear offspring that were striped, speckled, or spotted.
"When Laban said, "The speckled ones will be your wages,' then all the flock gave birth to speckled ones. Then when he said, "The streaked ones will be your wages,' all the flock gave birth to streaked offspring.
As it was, when it was time for the livestock to breed, I once looked up in a dream, and the male goats that were mating with the flock were producing streaked, speckled, and spotted offspring.
""Look around!' he said. "Go ahead, look! All the male goats have been mating with the flock, producing offspring that are streaked, speckled, and spotted, because I've been watching everything that Laban has done to you.
Now, you promised me that "I'm certainly going to cause things to go well with you, and I'm going to make your offspring as numerous as the sand of the sea, which cannot be counted.'"
So Judah instructed Onan, "You are to have sexual relations with your dead brother's wife, performing the duty of a brother-in-law with her, and have offspring for your brother."
But Onan knew that the offspring wouldn't be his own heir, so whenever he had sexual relations with his brother's wife, he would spill his semen on the ground to avoid fathering offspring for his brother.