Who's judging? Only God has the authority to condemn.
But Christ was very clear in Matthew 7:20 "You will KNOW them by their fruit [deeds]" that someone's actions are how we are to discern truth from error. If you want to ignore Christ's command to be discerning knock your socks off.
Another verse: "preach the word; be ready in season and out of season; reprove, rebuke, exhort, with great patience and instruction." (II Timothy 4:2)
There is more than one type of judgment. One is solely God's domain: condemnation. The other we are commanded to do in II Timothy above. If you can't make any type of judgements as to right and wrong, truth from error, how are you going to obey that verse?
Judge from the Merriam-Webster thesaurus.
4) to have as an opinion (I judge that he knew what kind of woman she was when he married her)
Synonyms allow [chiefly Southern & Midland], conceive, consider, deem, esteem, feel, figure, guess, hold, imagine, judge, reckon [chiefly dialect], suppose, think, regard, view; accept, perceive; depend, rely, trust; assume, presume, presuppose, surmise; conclude, deduce, infer.....