Just because a person does not go to any church, does not mean they are not a saved believer in Christ, we know we are saved as Jesus most assuredly says,
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John 5
24
“Most assuredly, I say to you, he who hears My word and believes in Him who sent Me has everlasting life, and shall not come into judgment, but has passed from death into life. 25 Most assuredly, I say to you, the hour is coming, and now is, when the dead will hear the voice of the Son of God; and those who hear will live. 26 For as the Father has life in Himself, so He has granted the Son to have life in Himself, 27 and has given Him authority to execute judgment also, because He is the Son of Man. 28 Do not marvel at this; for the hour is coming in which all who are in the graves will hear His voice 29 and come forth—those who have done good, to the resurrection of life, and those who have done evil, to the resurrection of condemnation. 30 I can of Myself do nothing. As I hear, I judge; and My judgment is righteous, because I do not seek My own will but the will of the Father who sent Me.
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Years ago on the Baptist forum, an admin, which I had some run ins with said anyone who does not go to church can't be saved.
That we are commanded to go to church.
He was hard nosed about it too. Posting scriptures will sometimes, maybe oftentimes make no difference to such a person, my opinion is they are hardened. Course you could get into battles over things like this, but to no profit, it then is just arguing over words. I know what I believe, and it may very well be different from what you believe, and we both can point to a scripture and say here read this. I have found it to be fruitless pursuit over many years to do that. If it gets bad enough that I don't want to continue on with hearing them, a forum is nice as they can be put on ignore. In a public place though, there is no ignore button like that. You go there, you will see their face, and people from into small groups one against the other. Paul had to deal with that constantly in various churches, people who are divisive.
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1 Cor 1
10 Now I plead with you, brethren, by the name of our Lord Jesus Christ, that you all [
d]speak the same thing, and
that there be no [
e]divisions among you, but
that you be perfectly joined together in the same mind and in the same judgment. 11 For it has been declared to me concerning you, my brethren, by those of C

e’s
household, that there are [
f]contentions among you. 12 Now I say this, that each of you says, “I am of Paul,” or “I am of Apollos,” or “I am of Cephas,” or “I am of Christ.” 13 Is Christ divided? Was Paul crucified for you? Or were you baptized in the name of Paul?
14 I thank God that I baptized none of you except Crispus and Gaius, 15 lest anyone should say that I had baptized in my own name. 16 Yes, I also baptized the household of Stephanas. Besides, I do not know whether I baptized any other. 17 For Christ did not send me to baptize, but to preach the gospel, not with wisdom of words, lest the cross of Christ should be made of no effect.
Christ the Power and Wisdom of God
18 For the [
g]message of the cross is foolishness to those who are perishing, but to us who are being saved it is the power of God. 19 For it is written:
“I will destroy the wisdom of the wise,
And bring to nothing the understanding of the prudent.”
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1 Cor 3
2 I fed you with milk and not with solid food; for until now you were not able
to receive it, and even now you are still not able; 3 for you are still carnal. For where
there are envy, strife, and divisions among you, are you not carnal and [
a]behaving like
mere men? 4 For when one says, “I am of Paul,” and another, “I
am of Apollos,” are you not carnal?
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1 Cor 11
17 Now in giving these instructions I do not praise
you, since you come together not for the better but for the worse. 18
For first of all, when you come together as a church, I hear that there are divisions among you, and in part I believe it. 19 For there must also be factions among you, that those who are approved may be [b]recognized among you. 20 Therefore when you come together in one place, it is not to eat the Lord’s Supper. 21 For in eating, each one takes his own supper ahead of
others; and one is hungry and another is drunk. 22 What! Do you not have houses to eat and drink in? Or do you despise the church of God and shame [
c]those who have nothing? What shall I say to you? Shall I praise you in this? I do not praise
you.
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Divisiveness is a work of the flesh.
'FOR THERE MUST ALSO BE FACTIONS AMONG YOU'
Perhaps to show those who have God's approval, even so at the judgment seat of Christ, if it takes that long