When the wicked are destroyed at the Lord’s Second Coming “it shall leave them neither root nor branch” (v. 1), or, you could say, without ancestry nor posterity. But with some preparation, that curse can be avoided by individuals. A few verses later, the way for genealogical research is established, indicating its importance. “Behold, I will send you Elijah the prophet before the great and dreadful day of the Lord. And he shall turn the heart of the fathers to the children, and the heart of the children to their fathers lest I come and smite the earth with a curse” (verses 5 – 6).
Family is that important!