The New Testament is clear that there is some judgment you are to engage in and some you are to refrain from.
Judging righteous judgment is commanded (John 7:24). Being hypocritical or hypercritical in judgment is condemned (Matthew 7:1-5).
Judging whether a person is a false teacher, a wolf in sheep’s clothing, a spiritual dog or a spiritual hog is expected (Matthew 7:15, 6). Judging a brother’s conscience when he has the liberty to let his conscience be his guide is opposed (Romans 14:13).
None of us has earned the right to judge a brother’s conscience on matters which are indifferent to God. “Therefore, let us not judge one another anymore, but rather resolve this, not to put a stumbling block or a cause to fall in our brother’s way” (Romans 14:13).