Here's my reasoning on the "core doctrines"...........
This list and table come from jwfacts. These are current groups that share the 'core doctrines' with JW's
Bible Students
Christadelphians
Mormons
Seventh-day Adventists
Two By Twos
Worldwide Church of God
The following table shows that the key doctrines of Trinity, Soul, Salvation, Time Prophecies and Morals are almost the same for these four groups that started at a similar time borrowing similar ideas from similar people, so JW's are not unique in this aspect.
| Mormon | Jehovah's Witnesses | Seventh-day Adventist | Christadelphians |
Origin | 1800's America | 1800's America | 1800's America | 1800's America |
Founder | Joseph Smith | Charles Russell | Ellen White | Dr Thomas |
Trinity | No | No | Yes, though some groups reject the Trinity | No |
Narrow Salvation | Only one true religion | Only one true religion | Only one true religion | Only one true religion |
Salvation Requirements | Faith, repentance, baptism, continued righteousness | Faith, repentance, baptism, continued righteousness | Faith, repentance, baptism, continued righteousness | Faith, repentance, baptism, continued righteousness |
Armageddon | Not the end of this earth | Not the end of this earth | Not the end of this earth | Not the end of this earth |
Armageddon | Destruction of most of mankind | Destruction of most of mankind | Destruction of most of mankind | Destruction of most of mankind |
Time Prophecies | Yes | Yes | Yes | Yes |
Sabbath | Yes | No | Yes | No |
Soul Mortal | No | Yes | Yes | Yes |
Go to war | Yes | No | No | No |
Promote Love and Strong Community | Yes | Yes | Yes | Yes |
Shun | Yes | Yes | No | Yes |
Strict Moral Code | Yes | Yes | Yes | Yes |
Under the premise that Jah speaks only thru the Org, let's look at what Joshua said on the threshold of the Promised Land:
(Joshua 21:43-45) . . .So Jehovah gave Israel all the land that he had sworn to give to their forefathers, and they proceeded to take possession of it and to dwell in it. 44 Furthermore, Jehovah gave them rest all around, according to everything that he had sworn to their forefathers, and not one of all their enemies stood before them. All their enemies Jehovah gave into their hand. 45 Not a promise failed out of all the good promise that Jehovah had made to the house of Israel; it all came true.
It all came true because it was Jehovah who said it. In Deut chap 18 Jehovah tells us the difference when he says something and when men make things up.
(Deuteronomy 18:20-22) . . .“‘However, the prophet who presumes to speak in my name a word that I have not commanded him to speak or who speaks in the name of other gods, that prophet must die. 21 And in case you should say in your heart: “How shall we know the word that Jehovah has not spoken?” 22 when the prophet speaks in the name of Jehovah and the word does not occur or come true, that is the word that Jehovah did not speak. With presumptuousness the prophet spoke it. You must not get frightened at him.’
The "core truths" of soul, trinity, hellfire, etc. cannot be proven or disproven until we die. At that time and that time alone will we know if they are true or not. Outside of those core truths, EVERYTHING the WT has told us has had to have 'new light'. NOTHING that makes them unique as JW's has ever stayed true. NOTHING!! Tell them to make a list of everything that makes them unique as JW's that has ever stayed true without change or New Light.
2+2=4 is a simple truth. It is true right now, it was true 2,000 years ago and it will still be true 2,000 years into the future. If something is said to be true it will NEVER become false at a later date. However the Org tells us Jah reveals truth thru them "progressively".
Let's learn math in a progressive fashion:
2+2=4 (simple math)
200+200=400 (progressively harder math)
1348 divided by 248 = 5.35 (progressively even harder math)
The simple logic is that even though the math becomes progressively harder and advanced, all the previous answers are still true. The idea that "progressive" can mean that a 'truth' can become false at a later time and its only an "adjustment" is WT fabricated logic. It is another Logical Fallacy. The ONLY reason for "New Light" is because WT keeps painting itself into a corner with made up doctrines and has to lie to get its way out. And with the constant logical fallacies in every article/talk JW's are kept too stupid to realize it.
If you keep hitting them with the fact that if Jah says something it will always come true. They have to agree with that and the Cognitive Dissonance will have a party in their heads.