Are Christians forbidden to make judgments? It depends on what kinds of judgments are being made. Christians are called to make judgments in everything they do; namely, sharing the gospel. In sharing the gospel to someone, judgments are being made constantly by the one sharing it – “you are a sinner in need of a Savior,” “you are completely helpless in earning salvation,” “you fall short from the glory of God,” etc. Clearly, these are judgments being made by the person spreading the gospel. Making judgments are necessary in the daily Christian life. Does the Bible not command men to hold fast to that which is true? "But examine everything carefully; hold fast to that which is good;” (1 Thess. 5:21). So, if someone lies, Christians better be exposing it as such. Take Peter for example:

“But Peter said, ‘Ananias, why has Satan filled your heart to lie to the Holy Spirit and to keep back {some} of the price of the land? While it remained {unsold,} did it not remain your own? And after it was sold, was it not under your control? Why is it that you have conceived this deed in your heart? You have not lied to men but to God.’" (Acts 5:3-4).

If you are a Christian, are you not going to judge a lie as a lie like Peter did with Ananias and Saphira? Additionally, Paul judged the Galatians as fools (Gal. 3:1) and Jesus judged the Pharisees all over the place. Oftentimes, we must judge what is not true in order to hold fast to what is good and true. Therefore, it is not forbidden for Christians to make certain kinds of judgments.

Furthermore, Christians are commanded to contend for the faith that was delivered by the apostles (Jude 4) and to give answers to those who would ask us [Christians] for the hope that is within us (1 Pet. 3:15). If we stood by idly as error crept by uncharted, the non-Christian cults would continue to arise and deceive many into eternal damnation as Christ warned us about in His Word:

"For false Christs and false prophets will arise and will show great signs and wonders, so as to mislead, if possible, even the elect. Behold, I have told you in advance” (Matt. 24:24-25).

Telling people what they do not want to hear can result in being accused of being “judgmental” or a “religious bigot” in this postmodern society that denies the existence of absolutes. However, God’s Word is full of absolutes and commands us to hold fast to these absolute truths even if it means we will offend our family, lose our friends or our very lives. To do anything other than warn people of their error is not loving to God or our neighbor.

Other Scripture to consider:

"Now we have received not the spirit of the world, but the Spirit who is from God, that we might understand the things freely given us by God. And we impart this in words not taught by human wisdom but taught by the Spirit, interpreting spiritual truths to those who are spiritual. The natural person does not accept the things of the Spirit of God, for they are folly to him, and he is not able to understand them because they are spiritually discerned. The spiritual person judges all things, but is himself to be judged by no one" (1 Cor. 2:12-15).