I checked as well. It occurs to me that all online versions of the DR of which I am aware, and indeed pretty much all copies outside academic libraries are Challoner's revision (amounting to almost a new edn heavily drawing on the kjv, but then the kjv drew on the dr and both drew on the Bishops Bble etc etc) which he would still have been working on in 1745. It may be that the phrase is in the original DR but that would indicate quite impressive research.

The presence of a DR Bible in an 18th century french monastery isn't that surprising though.