ציטירנדיקער פּירוש אויף דברים 28:2

13. “So that He caused them to move forward וַֽיְנַהֲגֵ֖הוּ with difficulty/heaviness.” (Ex. 14:25) Since it does not say “so that they moved וַֽיְנַהֲגֵ֖וּם with difficulty/heaviness,” it comes to teach that He caused them to move backwards toward their first leader who led the camps of Egypt with seriousness, ’ that is, because of the warmth of the fire and their traveling, fever overcame them… For it is stated in the Reproofs, “Will smite you with… inflammation, with scorching heat. ” (Deut. 28:2) These are different types of fevers. Inflammation דַּלֶּ֗קֶת is a higher fever than regular fever קַּדַּ֜חַת. In Deuteronomy they are threatened with it. Scorching heat, חַרְחֻר֙ is a sickness that includes two different types (of inflammation) and there is no cure because what helps one hurts the other. It is called חַרְחֻר֙ from the expression, “for kindling strife.” (Pr. 26:21) It is known that one who has a fever has many pains, especially when he has several different types of fevers as mentioned.