The WT G.B. doesn’t want Jesus to come and rule the Earth.
John 11:45-48
45 Therefore many of the Jews that had come to Mary and that beheld what he did put faith in him; 46 but some of them went off to the Pharisees and told them the things Jesus did. 47 Consequently the chief priests and the Pharisees gathered the San'he·drin together and began to say: "What are we to do, because this man performs many signs? 48 If we let him alone this way, they will all put faith in him, and the Romans will come and take away both our place and our nation." 49
Many of the chief priests and Pharisees worried that if Jesus gets more people to follow him that he will cause them to revolt against Rome, to reestablish the Davidic line of Kingship over the Jews.
They feared reprisals from Rome in which they would suffer the loss of the nation and their place of authority in it. In their minds they lose either way, they lose if he is the promised Messiah or they lose if he is an impostor.
Many of these men "claimed" to be looking for the Messiah, but in their hearts most wanted no such thing.
I think that it is the same way with the majority of the G.B. They give lip service to wanting Jesus to come again. They give talks about the closeness of his coming and have WT and books written in which they give certain dates for his coming to rule the Earth, but I think the majority are not looking forward to his coming, but dreading it.