From what I can see, Isaiah uses the root yasha, “save,” 48 times in his prophecy.  ”Salvation” (yeshua) appears 19 times, while the verb, used both in the perfect/imperfect (“save”) and as a substantive participle (“Savior”) appears 29 times.  Isaiah’s name which contains the same root, appears 16 times.

48 is an interesting number, of course.  4 x 12 is the obvious breakdown, Israel saved to the four corners of the land, Israel saved/rescued from the four corners of the earth.

Interestingly, go’el, “Redeemer” or “Kinsman-Redeemer,” apears 24 times.