Sentence:  Here , for the most part , they were well treated , as a `` reminder of the <WSD>Old</WSD> Testament heritage of Christianity '' ; many of their gifted members were prominent in the Vatican as physicians , musicians , bankers . 
Meaning of the word marked with <WSD> tags:  the collection of books comprising the sacred scripture of the Hebrews and recording their history as the chosen people; the first half of the Christian Bible