The interpretation of Matt. 7:1 that Christians should not make value judgments of the behavior of others is shown to be erroneous [wrong, mistaken] by multiple commands in Scripture to do exactly that. Christians are forbidden to judge Hypocritically, that is, when such judgment entails intolerance of another's sin being blind to one's own sin, or when human judgment impinges on God's prerogative as judge.
More over, the Lord said to me, "Son of Man, will you judge Aholah and Aholibah? Then declare to them their abominations".
The prophet is authorized to judge the Bloody city, the city of bloods.
1 Corin. 6:2
Or do you not know that the Saints will judge the world?
If the world is judged by you, are you not competent to constitute the smallest law courts?
1 Corin. 6:3
Do you not know that we Will judge angels? How much more matters of this life?
MATTERS OF LAW SUITS
1 Corin. 6:1
Does any one of you when he has a case against his neighbor,
dare to go to law before the unrighteous and not before the Saints?