Name meaning "God is salvation" (6)

I believe the answer is:

isaiah

(Other definitions for isaiah that I've seen before include "8th century Hebrew prophet and O.T. Book" , "After Psalms, the longest book in the Old Testament" , "A philosophical Berlin" , "Book and prophet of the Old Testament" , "Major Hebrew prophet and O.T. Book" .)

I've seen this clue in The New York Times.

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