יַכְּכָ֨ה יְהוָ֜ה בִּשְׁחִ֣ין רָ֗ע עַל־הַבִּרְכַּ֙יִם֙ וְעַל־הַשֹּׁקַ֔יִם אֲשֶׁ֥ר לֹא־תוּכַ֖ל לְהֵרָפֵ֑א מִכַּ֥ף רַגְלְךָ֖ וְעַ֥ד קָדְקֳדֶֽךָ׃
The LORD will smite thee in the knees, and in the legs, with a sore boil, whereof thou canst not be healed, from the sole of thy foot unto the crown of thy head.
Targum Jonathan on Deuteronomy
The Word of the Lord will smite you with a sore ulcer in the knees, because you bent (them) in the matter of the transgression; and in the legs, by which you ran into it; for if you be not converted to the law you cannot be saved, but will be beaten by it from the sole of your feet unto the crown of your head.