Hi Tea for Two,
Here is some info. that may help. If you have other questions please email me, o.k.
First off - the WT is wrong when they limit the bride or heavenly class as being 144,000. The scriptures show that the great crowd is heavenly. They will be the rulers upon thrones and servants of God in his temple. (heavenly that is). I can email you scriptures later on.
2nd - The purpose of the gospel age is calling these Christians (the bride or church) out of the world, figuratively and baptizing them in the name of Christ. The Bible says taking "a people out for his name" that name is Christains. The calling to be Christians of the Church happens when we hear the true gospel of Christ. Upon recieving the gospel and believing it, then being moved to symbolize it in baptism, we are accepting the invitation to be sons of God.(the Jews were invited first, the gentiles second) Once you accept this invitation, then you will recieve confromation later on if you are accepted as a "son of God" . Paul says we are given a deposit of the Holy Spirit, which is the evidence that you have been excepted into this new covenant. In other words - you are a spirit child of God - Anointed.
3rd - Not all claiming to be Christians and are baptized are in this group and have the Holy Spirit. ONLY those with the Holy Spirit indwelling will be given the change to a new nature. It is evident not all claiming to be Christians has it by their works. you must have works showing you have it See Galatians 5 - fruit of the spirit and also Paul explains how you KNOW you are one who is spirit begotten in Romans Chapter 8. Now this does not mean you will be perfect, you will still sin, but slowly you will become more Christ Like each day.
4th - It would make sense that not all baptized christians are spirit begotten because many are baptized for the wrong reason, whether it be as infants, due to family pressure, or fear of destruction, this last one being the one Religions use today to bring people into their org. Usually those who are truly spirit begotten and are showing evidence as Paul brings out, are in a relationship with Christ because they WANT to be. Not for a reward or fear but because THEY heard the message about him and truly LOVE him! They consider everything else in life a LOSS for the gain of being one day with their Master, Christ Jesus.
Lastly, we are NEVER to judge any that feel they are spirit begotten because the Lord only knows who belong to him. Can some claim this and be wrong, yes. But it is not up to us to decide. Any who claim this hope, we should accept at their word.
The parable of the wheat and weeds shows that both groups - (true Christians who are spirit-anointed and those who are not) will grow alongside each other until the harvest. We are not in the Harvest yet as this work is done by Angels. In the Harvest, Christ with the Angels will seperate them and then the true sons of God will be revealed. Next, Christ will turn his attention to the rest of the Nations of unbelievers. Hope this helps. You can email me anytime.