A while ago I posted on another thread that I had been told by some Witnesses that the Tetragrammaton had been in the original Christian Greek Scriptures but had been removed when apostacy came into the church . I did not know where this came from at the time .However while looking something else up I came across this .As I could not find the original thread I have started a new one .Here is a quote from NWT Reference Edition 1984 :-
" Matthew made more than a hundred quotations from the inspired Hebrew Scriptures. Where these quotations include the divine name he would have been obligated faithfully to include the Tetragrammaton in his Hebrew Gospel account . When the Gospel of Matthew was translated into Greek , the Tetragrammaton was left untranslated within the Greek text according to the practice of that time .
Sometime during the second or third century CE the scribes removed the Tetragrammaton from both the Septuagint and the Christian Greek Scriptures and replaced it with Ky'ri-os "Lord " or The-os "God "
(Quoting George Howard ) " In the following pages we will set forth a theory that the divine name was originally in the NT quotation of and allusions to the OT and that in the course of time it was replaced mainly with Ky'ri-os "
We concur with the above , with this exception : We do not consider this view a "theory " , rather a presentation of the facts of history as to the transmission of Bible manuscripts "