I read somewhere judge not lest you be judged.
As Christians we are commanded to discern and judge the teachings of others - otherwise the person who doesn’t will fall for any heresy. So ... “judgement” is necessary.
As far as the “judgement” as to whether one is saved or not — one can listen to the “why” of that person telling about being saved - but in the end “that ultimate judgement” does come down to God who knows whether that person is lying or telling the truth. Since we can’t see inside the heart and know whether that person has truly accepted Christ, we cannot a judge authoritatively on that particular subject.
But we can judge as to whether the “teachings” are correct according to scripture - and we are commanded to do that very thing.
No man man made religious pomp and ceremony will save from death.
Hebrews 9:27 And as it is appointed unto men once to die, but after this the judgment:
So I guess we can just close all the prisons then...
Then you probably read that in a revisionist Leftist diatribe, because that is not the entire verse, nor the correct context.
>> “I read somewhere judge not lest you be judged.” <<
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You should have read the whole chapter; it commands that we must judge, but that we first clean up our own act.