Deuteronomy 29:19-20

19Adonai will be unwilling to forgive him. For then the anger of Adonai and His jealousy will smoke against that person. So all the oath that is written in this scroll will settle on him, and Adonai will blot out his name from under the heavens.

20Adonai will single him out from all the tribes of Israel for ­calamity, according to all the oaths of the covenant written in this scroll of the Torah.