New International Version
the LORD will send fearful plagues on you and your descendants, harsh and prolonged disasters, and severe and lingering illnesses.

American Standard Version
then Jehovah will make thy plagues wonderful, and the plagues of thy seed, even great plagues, and of long continuance, and sore sicknesses, and of long continuance.

Berean Study Bible
He will bring upon you and your descendants extraordinary disasters, severe and lasting plagues, and terrible and chronic sicknesses.

Douay-Rheims Bible
The Lord shall increase thy plagues, and the plagues of thy seed, plagues great and lasting, infirmities grievous and perpetual.

English Revised Version
then the LORD will make thy plagues wonderful, and the plagues of thy seed, even great plagues, and of long continuance, and sore sicknesses, and of long continuance.

King James Bible
Then the LORD will make thy plagues wonderful, and the plagues of thy seed, even great plagues, and of long continuance, and sore sicknesses, and of long continuance.

World English Bible
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.

Young's Literal Translation
then hath Jehovah made wonderful thy strokes, and the strokes of thy seed -- great strokes, and stedfast, and evil sicknesses, and stedfast.

Deuteronomy 28:59 Additional Translations ...