Deuteronomy 28:58-59
58
If you will not observe to do all the words of this law that are written in this book, that you may fear this glorious and fearful name, YAHWEH YOUR GOD;
59
then Yahweh will make your plagues wonderful, and the plagues of your seed, even great plagues, and of long continuance, and severe sicknesses, and of long continuance.