I agree with a earlier poster who said the burden of proof is on the WTBTS not on the individual.
Who the slave is I can not prove scripturally for two reasons:
1. The bible does not say specifically who the slave is.
2. Jesus names the slave AFTER his return. He has not returned. Has this happened?
(Revelation1:7) Look! He is coming with the clouds, and every eye will see him, and those who pierced him; and all the tribes of the earth will beat themselves in grief because of him. Yes, Amen.
(Matthew 24:30) And then the sign of the Son of man will appear in heaven, and then all the tribes of the earth will beat themselves in lamentation, and they will see the Son of man coming on the clouds of heaven with power and great glory.
(Matthew 24:23-27) “Then if anyone says to YOU, ‘Look! Here is the Christ,’ or, ‘There!’ do not believe it. 24 For false Christs and false prophets will arise and will give great signs and wonders so as to mislead, if possible, even the chosen ones. 25 Look! I have forewarned YOU. 26 Therefore, if people say to YOU, ‘Look! He is in the wilderness,’ do not go out; ‘Look! He is in the inner chambers,’ do not believe it. 27 For just as the lightning comes out of eastern parts and shines over to western parts, so the presence of the Son of man will be.
Did the society say to us: ‘Look! Here is the Christ,’? Yes.
"Surely there is not the slightest room for doubt in the mind of a truly consecrated child of God that the Lord Jesus is present and has been since 1874." (Watchtower, Jan. 1, 1924, p5) Note that this is years after their "selection" and they are still teaching a lie
(Watchtower April 1, 1923, p. 106) '1925 is definitely settled by the Scriptures...the Christian has much more
upon which to base his faith than Noah had (so far as the Scriptures reveal) upon
which to base his faith in the coming deluge'
"A religion that teaches lies cannot be true." (Watchtower December 1, 1991 p7)
Here are some other scriptures (all from NWT) that may help you understand the viewpoint of most of us on this board:
(Luke 21:8) He said: “Look out that YOU are not misled; for many will come on the basis of my name, saying, ‘I am he,’ and, ‘The due time has approached.’ Do not go after them. ( The due time has approached is the WT mantra. Note that this is a COMMAND from Jesus. It carrys just as much weight as the command to Lot's wife not to turn back to Sodom. It should probably not be ignored)
(2Thessalonians2:3-4) Let no one seduce YOU in any manner, because it will not come unless the apostasy comes first and the man of lawlessness gets revealed, the son of destruction. 4 He is set in opposition and lifts himself up over everyone who is called “god” or an object of reverence, so that he sits down in the temple of The God, publicly showing himself to be a god.
(1John4:1) Beloved ones, do not believe every inspired expression, but test the inspired expressions to see whether they originate with God, because many false prophets have gone forth into the world.
(Jeremiah23:32) “Here I am against the prophets of false dreams,” is the utterance of Jehovah, “who relate them and cause my people to wander about because of their falsehoods and because of their boasting.” “But I myself did not send them or command them. So they will by no means benefit this people,” is the utterance of Jehovah.
***w81 5/1 p. 17*** "Let the honest-hearted person compare the kind of preaching of the gospel of the Kingdom done by the religious systems of Christendom during all the centuries with that done by Jehovah's Witnesses since the end of World World I in 1918. They are not one and the same kind"
"True, there have been those in times past who predicted an "end" to the world, even announcing a specific date. Yet nothing happened. The 'end' did not come. They were guilty of false prophesying. Why? What was missing? Missing from such people were God's truths and the evidence that He was using and guiding them.'' (Awake, Oct. 8, 1968)
1972 "Does this admission of making mistakes stamp them [Watchtower] as false prophets? Not at all, for false prophets do not admit to making mistakes." (Watchtower, Nov. 1, 1972, p. 644)
Note: Any false prophet would have to admit that they made a mistake when what they predict does not come true. Admission of a making a mistake does not have anything to do with whether a prophet is a true prophet.
There are 100's of examples of false prophecy. Jesus commanded us NOT to follow false prophets therefore he would NEVER have chosen false prophets to be his "faithful slave" If you want to know 100% who the slave is, wait until Christ's return and he will let everyone know. Anyone who makes that claim before his return is appointing themselves.