No to be in Christ is in the law of the. Spirit of life this is salvation. But there were some who were among the saints in their community that had not faith and who were unbelievers etc.
And I don’t change the scripture to try and fit my view
“ 1 Corinthians 14:23. If therefore the whole church be come together into one place, and all speak with tongues, and there come in those that are unlearned, or unbelievers, will they not say that ye are mad.”
1 Corinthians 15:34. Awake to righteousness, and sin not; for some have not the knowledge of God: I speak this to your shame.”
Even some of those leaders among the community were ministers of Satan
2 Corinthians 11:12. But what I do, that I will do, that I may cut off occasion from them which desire occasion; that wherein they glory, they may be found even as we.13. For such are false apostles, deceitful workers, transforming themselves into the apostles of Christ.14. And no marvel; for Satan himself is transformed into an angel of light.15. Therefore it is no great thing if his ministers also be transformed as the ministers of righteousness; whose end shall be according to their works.”
And we read ,
Jude 1:12. These are spots in your feasts of charity, when they feast with you, feeding themselves without fear: clouds they are without water, carried about of winds; trees whose fruit withereth, without fruit, twice dead, plucked up by the roots;”