ישעיהו לה:ו פירוש: רש״י ואבן עזרא

Then the lame shall skip like a hart, etc. Israel, who are now lame and weak. We find that he calls the weak with an expression of ‘lame,’ as the matter is stated (above 33:23): “The lame take the prey.”

Then shall the lame man leap, in his return to Jerusalem.

shall sing in My salvation.