Lets see what Jesus said at John 17:26
And I have declared unto them thy name, and will declare it: that the love wherewith thou hast loved me may be in them, and I in them. (AV)
and I made known unto them thy name, and will make it known; that the love wherewith thou lovedst me may be in them, and I in them. (ASV)
"And I have declared to them Your name, and will declare it, that the love with which You loved Me may be in them, and I in them." (NKJV)
I made known to them thy name, and I will make it known, that the love with which thou hast loved me may be in them, and I in them." (RSV)
"And I have declared to them Your name, and will declare it, that the love with which You loved Me may be in them, and I in them." (Phillips)
and I made known to them Thy name, and will make known, that the love with which Thou lovedst me in them may be, and I in them.? (Youngs)
Some say this was to make known Gods personality, however the name of God the Hebrew verb YHWH has to do with Gods personality meaning possibly ?the existing one? or ?the one the causes to become?
Gods view was that his people should know is name. e.g all the texts in Ezekiel that say the nations will have to know that my name is YHWH (Jehovah)
It is true that the English version of Jehovah is not the correct pronunciation, but we accept all the other ?J? names in the Hebrew texts. and Jesus is not the way to pronounce his name in either Greek of Hebrew but we use it.
The NWT puts Jehovah in all the places where the writers of the NT quote from the OT. There are a few places where thet should have lest it out.
While on earth Jesus was promoting his fathers will and he was not afraid of controversy so he would have used his fathers name.
No original copies of the writings of the NT exist. Because of the tradition of the Jews not to use Gods name and because the Paul to the Theselonians said that a falling away would come (2:3
?
Let no one deceive you in any way; for that day will not come, unless the rebellion comes first, and the man of lawlessness is revealed, the son of perdition,?) The word for ?falling away? according to Strongs is
apostasia
apostasia ap-os-tas-ee?-ah; feminine of the same as
647
; defection from truth (properly, the state) ["apostasy"]:?falling away, forsake.
There is no proof but it would seem as if those the copied the originals left out the name of God due to the tradition of not using it.