The main reason that Governing Body members and all the other JW impostors who pretend to be in a new covenant relationship with Christ is fake, is because they have incurred a curse from God because of their disobedience.
They claim that the new covenant (which Mt. 26: 27-28 clearly states is "for the forgiveness of sins') is only for themselves. All other people (except for supposed rare replacements) do not get to experience Justification. Of course, this is the biggest blasphemous lie from hell ever told. And, God made damn sure people could read his warning against anyone who would preach "a different gospel" :
But even if we or an angel from heaven should preach to you a gospel contrary to the one we preached to you, let him be accursed. 9 As we have said before, so now I say again: If anyone is preaching to you a gospel contrary to the one you received, let him be accursed. - Gal. 1: 8-9
The apostles never taught a two-tier salvation - one with the blood covering covenant, and one without it.