It seems to me the innate danger of depending on a commentary is becoming victim to the bias and error of the author. I'm providing your quoted scriptures in full, sometimes in context for clarity. All are KJV, because it is handy.
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Acts 17:11 - The Bereans, known for searching the scriptures to check the validity of Paul and Silas' message.
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Again I say unto you, That if two of you shall agree on earth as touching any thing that they shall ask, it shall be done for them of my Father which is in heaven. For where two or three are gathered together in my name, there am I in the midst of them. Mat 18:19 KJV.
I see you have incomplete understanding - still - of worship. touching - G1093 - concerning anything of importance. This could be fulfilled between husband and wife during a study night.
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And let us consider one another to provoke unto love and to good works: Not forsaking the assembling of ourselves together, as the manner of some is; but exhorting one another: and so much the more, as ye see the day approaching. Hebrews 10:24-25 KJV
And a counter scripture, as there often is,
Php 2:12 Wherefore, my beloved, as ye have always obeyed, not as in my presence only, but now much more in my absence, work out your own salvation with fear and trembling.
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"very few people can maintain integrity without the support of those that share the same beliefs as do they"
Supporting scriptures, please? Paul's own conversion was a very individual affair and it took considerable effort to convince the disciples that it was genuine.
I would suggest rather that it is easier to maintain a constant set of beliefs when surrounded by those who are the same. Maybe too easy.
Personally, my beliefs are stronger for being tested against those whose hold different beliefs than mine.
Integrity is the wrong word. Integrity implies inner strength that cannot be broken.
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Agreed, spending time with other Jehovah's Witnesses is a motivator to stick to the expected behavior. I prefer the advantages described in the bible, where companions can support each other. That is, it is the stronger's obligation to lift the weaker.
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The Bereans accepted Paul and Silas' teachings after what they were saying bore out in the scriptures. Also, let's not forget "with signs following", evidence of heavenly blessing that followed Moses, Jesus, Peter, and also Paul.
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You realize that all churches have members who were formerly of another belief? You are a victim of confirmation bias. There are also people like me who studied the Watchtower literature, compared it against the bible, and rejected them as false.
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Huh, Philip knew his gospel better than you. And it didn't take six months to convey.
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Matthew 11:6 - poor choice.
Now when John had heard in the prison the works of Christ, he sent two of his disciples, And said unto him, Art thou he that should come, or do we look for another? Jesus answered and said unto them, Go and shew John again those things which ye do hear and see: The blind receive their sight, and the lame walk, the lepers are cleansed, and the deaf hear, the dead are raised up, and the poor have the gospel preached to them. And blessed is he, whosoever shall not be offended in me. Matthew 11:2-6 KJV
You are Jehovah's Witness, not Christ's. Your religious leaders have declared the age of miracles dead, yet insist they have the superior truth. Offensiveness is not proof of God's blessing. In context, you can see that Jesus provided evidence that he was the one. If offensiveness is the mark of truth, you will have to add radio shock-jocks to the list. They are better at it.