They do not represent the kingdom anymore. Although they still holding some basic truths they spoiled the pure worship. They did not stand by Jesus commandment "Render to Cæsar the things that are Cæsar's, and to God the things that are God's." I believe that all religions did the same thing.
Does the nation of Israel still represent God? Does the catholic church still represent God?
The Watchtower abandoned Jesus and have become part of the world.
But there were false prophets also among the people, even as there shall be false teachers among you, who privily shall bring in damnable heresies, even denying the Lord that bought them, and bring upon themselves swift destruction. And many shall follow their pernicious ways; by reason of whom the way of truth shall be evil spoken of.
2 Peter 2:1-2
https://www.jwfacts.com/watchtower/worship-jesus.php
They have become state approved religion organisation and they can't practice pure worship as they are not unspotted from the world. They even receive state subsidies.
They praised the united nations for keeping peace in the world and were part of the organisation for a while.
The food they put on God's table ( their teachings) is not clean anymore.“ ‘A son honors his father, and a servant his master. Then if I am a father, where is My honor? And if I am a master, where is My respect?’ says the Lord of armies to you, the priests who despise My name! But you say, ‘How have we despised Your name?’ You are presenting defiled food upon My altar. But you say, ‘How have we defiled You?’ In that you say, ‘The table of the Lord is to be despised.’ And when you present a blind animal for sacrifice, is it not evil? Or when you present a lame or sick animal, is it not evil? So offer it to your governor! Would he be pleased with you, or would he receive you kindly?” says the Lord of armies. “But you are profaning it by your saying, ‘The table of the Lord is defiled, and as for its fruit, its food is to be despised.’ You also say, ‘See, how tiresome it is!’ And you view it as trivial,” says the Lord of armies, “and you bring what was taken by robbery and what is lame or sick; so you bring the offering! Should I accept it from your hand?” says the Lord.
Malachi 1:6-8, 12-13
And is more. Maybe another time.
I said before. Nobody has to work for God in order to be saved. Salvation as God decided, comes through Jesus blood in the first place and through faith. In the thousand year reign and beyond other sheep and anyone else coming back to life will only need to obey God and will be enough "by loving the Lord your God, by obeying His voice, and by holding close to Him; for this is your life and the length of your days, so that you may live in the land which the Lord swore to your fathers, to Abraham, Isaac, and Jacob, to give them.” Deuteronomy 30:20.
Lucifer and Adam were perfect and were granted life as long as they were faithful to God and yet they rebelled.
I believe what the Bible teaches. Everyone that practice pure worship as Jesus showed us will live. I have chosen this path because I believe is true. Who will live and die is not for me to say, I leave that to God's decision. "Jesus saith unto her, Woman, believe me, the hour cometh, when ye shall neither in this mountain, nor yet at Jerusalem, worship the Father. Ye worship ye know not what: we know what we worship: for salvation is of the Jews. But the hour cometh, and now is, when the true worshippers shall worship the Father in spirit and in truth: for the Father seeketh such to worship him. God is a Spirit: and they that worship him must worship him in spirit and in truth."
John 4:21-24 KJV