Beloved, do not believe every spirit, but test the spirits to see whether they are from God, for many false prophets have gone out into the world. By this you know the Spirit of God: every spirit that confesses that Jesus Christ has come in the flesh is from God, and every spirit that does not confess Jesus is not from God. This is the spirit of the antichrist, which you heard was coming and now is in the world already. Little children, you are from God and have overcome them, for he who is in you is greater than he who is in the world. They are from the world; therefore they speak from the world, and the world listens to them. We are from God. Whoever knows God listens to us; whoever is not from God does not listen to us. By this we know the Spirit of truth and the spirit of error.
—1 John 4:1-6
by: Jerry Johnson.
Spiritual discernment is such an important principle. In this passage, John dealt with a view known as Docetism which denied that Christ came in the flesh as a human being to be a representative for actual human sinners in His physical death on the Cross. There are other places in Scripture that deal with serious theological errors too. For us, the key takeaways are that we must study to know truth from error and then have the courage to tactfully confront individuals and organizations who are leading people astray through their mishandling the Gospel message.