Had to go to meeting, thus the delay in my reply.
1. Jesus Attended the Jewish Synagogue for Most of His Life. At that time, they were Absolutely Teaching False Doctrine, as well as Man Made tradition that was Contrary to God's True Word.
True. Of course, he was sent to the lost sheep of the house of Israel. He was also an Israelite. And as for those false doctrines and traditions, what did he do? Just go along with it? For a time, yes. But after his baptism, he called them hypocrites for teaching commands of men as false doctrines for their traditions, for burdening the people. Try doing that in a Kingdom Hall.
2. Paul supported False Religion, and he even Murdered righteous men in Support of that Religion. - Jesus chose him, because of his Heart Condtion.
Also true. However, recall what Christ said to him at first: "Saul, Saul, why are you persecuting me?" (Acts 9:4) Yes, he saw the good in him, but he also acknowledged the bad. That was to change with Paul.
Later, Paul said:
"Do not become unevenly yoked with unbelievers. For what fellowship do righteousness and lawlessness have? Or what sharing does light have with darkness? 15 Further, what harmony is there between Christ and Be′li·al? Or what does a believer share in common with an unbeliever? 16 And what agreement does God’s temple have with idols? For we are a temple of a living God; just as God said: “I will reside among them and walk among them, and I will be their God, and they will be my people.” 17 “‘Therefore, get out from among them, and separate yourselves,’ says Jehovah, ‘and quit touching the unclean thing’”; “‘and I will take you in.’” 18 “‘And I will become a father to you, and you will become sons and daughters to me,’ says Jehovah, the Almighty." (2 Cor 6:14-18)
Notice the order... get out, separate yourselves, quit touching the unclean thing... and I will take you in. I'm not saying the order is ultra crucial, but it's noteworthy, nonetheless, and I would say that if we know a religion/church to be false, this admonition has to count for something. Plus, we have the benefit of the visions of Revelation, including the angel declaring (speaking of Babylon the Great), "Get out of her, my people!". That must be taken into consideration.
3. No one, teaches Truth, anywhere in the World. I believe that Jesus wants us to Remain in the Church that we are in at the time of Being Called .1 Cor 7:17 " Only let each person lead the life that the Lord has assigned to him, and to which God has called him. This is my rule in all the churches." (My opinion, what are your thoughts on this Scripture?)
I'm not afraid to say that I believe in Christ. Before undertaking this journey learning TTATT, I had zero faith in Christ. I thought I did, but have realized that my faith was seriously misplaced in "the organization" instead of Christ. To that end, I agree with you. No one can truly teach truth unless they look to the one who IS truth, that is, Christ. John 14:6) There are some here who would mock me for that position, but it is my position, nonetheless.
To address the verse you quoted, it's an interesting take, but since I like reading things in context, let's take a look at this more in context. Not sure which translation you used... perhaps ESV? Here's the passage, verses 17-23.
Only let each person lead the life that the Lord has assigned to him, and to which God has called him. This is my rule in all the churches. 18 Was anyone at the time of his call already circumcised? Let him not seek to remove the marks of circumcision. Was anyone at the time of his call uncircumcised? Let him not seek circumcision. 19 For neither circumcision counts for anything nor uncircumcision, but keeping the commandments of God. 20 Each one should remain in the condition in which he was called. 21 Were you a bondservant when called? Do not be concerned about it. (But if you can gain your freedom, avail yourself of the opportunity.) 22 For he who was called in the Lord as a bondservant is a freedman of the Lord. Likewise he who was free when called is a bondservant of Christ. 23 You were bought with a price; do not become bondservants of men. 24 So, brothers, in whatever condition each was called, there let him remain with God.
The point Paul was trying to make was that a person need not make drastic changes if they are called because their calling was not dependent on such changes. It's a free gift. However, he did make it a point to say that if they were slaves, they should try to gain their freedom. He made that point elsewhere, too, that they should not be enslaved to men. Take that for what it's worth.
Here's my thinking on the matter. If I could openly speak about the Bible with JWs without being judged/ostracized/hauled before a judicial committee and thrown out, if I could disagree with the GB on matters of importance, if I could openly declare my faith in Christ, then remaining a JW might be an option. But, I cannot do any of that. I cannot openly declare my faith in Christ without, at a minimum, raising eyebrows. I certainly could not openly declare my faith by my actions by partaking of the bread and the wine at the Memorial. That being the case, in my opinion, at some point in time, I will have to "come out".