'Descendants' in the Bible

For the promise to Abraham or to his descendants that he would inherit the world was not fulfilled through the law, but through the righteousness that comes by faith.

For this reason it is by faith so that it may be by grace, with the result that the promise may be certain to all the descendants -- not only to those who are under the law, but also to those who have the faith of Abraham, who is the father of us all

Against hope Abraham believed in hope with the result that he became the father of many nations according to the pronouncement, "so will your descendants be."

nor are all the children Abraham's true descendants; rather "through Isaac will your descendants be counted."

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.

Just as Isaiah predicted, "If the Lord of armies had not left us descendants, we would have become like Sodom, and we would have resembled Gomorrah."