Thanks to all for the explanations.
At the time Jesus said this, he was clearly not speaking to a large crowd, but to his disciples, which, I believe were more than the 12, though. OK, sure, I can see bringing this forward into today to apply to those who meet the criteria. But to connect them with the 144,000 must have been some kind of "divine revelation," because there is no thread of logic to link them with JW or any other organization, even if these are not literal Jews and 144,000 is not meant to be a literal, exact count.