Romans 9:8NET Bible
This means it is not the children of the flesh who are the children of God; rather, the children of promise are counted as descendants.
Related Verses
Genesis 2:21
So the LORD God caused the man to fall into a deep sleep, and while he was asleep, he took part of the man's side and closed up the place with flesh.
Genesis 2:23
Then the man said, "This one at last is bone of my bones and flesh of my flesh; this one will be called 'woman,' for she was taken out of man."
Genesis 3:16
To the woman he said, "I will greatly increase your labor pains; with pain you will give birth to children. You will want to control your husband, but he will dominate you."
Genesis 6:4
The Nephilim were on the earth in those days (and also after this) when the sons of God were having sexual relations with the daughters of humankind, who gave birth to their children. They were the mighty heroes of old, the famous men.
Genesis 6:19
You must bring into the ark two of every kind of living creature from all flesh, male and female, to keep them alive with you.