Ibn Ezra, on Isa 58:8

“Then shall thy light break forth as the morning, and thy health shall speedily arise, and thy justice shall go before thy face, and the glory of the Lord shall gather thee up.”

“Then shall thy light break forth as the morning, gradually increasing. וארוכתך And thine health. ארוכה is a noun; comp. Jer. 30:17. Some say that ארוכה, lit. length refers here to the time during which the illness is to last; the word מהרה speedily, which follows, agrees well with this explanation. יאספך Shall be thy rereward. Comp. מאסף rereward (Num. 10:25). And thy righteousness shall go, etc. Thus, there will be protection from all sides.”

Imported from an open dataset — not yet checked against the printed edition.