Technically all Christians have a version of this. Though even in "Bible Churches" it is usually tempered by the second bit below, and processes of repentance and whatnot.

9 I wrote to you in my letter not to associate with sexually immoral people— 10 not at all meaning the people of this world who are immoral, or the greedy and swindlers, or idolaters. In that case you would have to leave this world. 11 But now I am writing to you that you must not associate with anyone who claims to be a brother or sister[c] but is sexually immoral or greedy, an idolater or slanderer, a drunkard or swindler. Do not even eat with such people.

12 What business is it of mine to judge those outside the church? Are you not to judge those inside? 13 God will judge those outside. “Expel the wicked person from among you.”

I Corinthians 5

15 “If your brother or sister sins, go and point out their fault, just between the two of you. If they listen to you, you have won them over. 16 But if they will not listen, take one or two others along, so that ‘every matter may be established by the testimony of two or three witnesses.’ 17 If they still refuse to listen, tell it to the church; and if they refuse to listen even to the church, treat them as you would a pagan or a tax collector.

Matthew 18

As an aside, that Corinthians bit spells it out in plain-ass English that any "Christian" screaming at non-Christians about being gay, trans, or whatever either do not know their Bible or only use it when it supports the actions they already want to take.

As a second aside, it is kind of funny what one still remembers even after being out of the church for a couple decades.