false witnesses, judgement vs. discernment, and dealing with sin...

Matthew 7:15: "Watch out for false prophets. They come to you in sheep's clothing, but inwardly they are ferocious wolves. By their fruit you will recognize them. Do people pick grapes from thornbushes, or figs from thistles? Likewise every good tree bears good fruit, but a bad tree bears bad fruit. A good tree cannot bear bad fruit, and a bad tree cannot bear good fruit. Every tree that does not bear good fruit is cut down and thrown into the fire. Thus, by their fruit you will recognize them. Not everyone who says to me, 'Lord, Lord' will enter the kingdom of heaven, but only he who does the will of my Father who is in heaven."
Matthew 24:11 & 24: "...many false prophets will appear and deceive many people...false Christs and false prophets will appear and perform great signs and miracles to deceive even the elect..."
2 Corinthians 11:14: "...Satan himself masquerades as an angel of light. It is not surprising, then, if his servants masquerade as servants of righteousness."
Galatians 2:4: "This matter arose because some false brothers had infiltrated our ranks to spy on the freedom we have in Christ Jesus and to make us slaves."
2 Peter 2:1-3: "But there were also false prophets among the people, just as there will be false teachers among you. They will secretly introduce destructive heresies, even denying the sovereign Lord who bought them--bringing swift destruction on themselves. Many will follow their shameful ways and will bring the way of truth into disrepute. In their greed these teachers will exploit you with stories they have made up. Their condemnation has long been hanging over them, and their destruction has not been sleeping."
what's sick and sad is when mentally ill or demon-possessed people lie and claim to have a ministry degree and/or call themselves doctor to make themselves seem credible.
1 Timothy 6:3: "If anyone teaches false doctrines and does not agree to the sound instruction of our Lord Jesus Christ and to Godly teaching, he is conceited and understands nothing. He has an unhealthy interest in controversies and quarrels about words that result in envy, strife, malicious talk, evil suspicions and constant friction between men of corrupt mind, who have been robbed of the truth and who think that godliness is a means to financial gain. But godliness with contentment is great gain. For we brought nothing into the world, and we can take nothing out of it. But if we have food and clothing, we will be content with that. People who want to get rich fall into temptation and a trap and into many foolish and harmful desires that plunge men into ruin and destruction...Command those who are rich in this present world not to be arrogant nor to put their hope in wealth, which is so uncertain..."
How can we be discerning without being judgmental? It requires love for others, but a committment to upholding and contending for the truth. Hate the sin--love the sinner.
1 John 4:1: "Dear friends, do not believe every spirit, but test the spirits to see whether they are from God, because many false prophets have gone out into the world."
Ephesians 5:6-12: "Let no one deceive you with empty words, for because of such things God's wrath comes on those who are disobedient. Therefore, do not be partners with them...Have nothing to do with the fruitless deeds of darkness, but rather expose them. For it is shameful even to mention what the disobedient do in secret."
Ephesians 4:11: "It was He who gave some to be apostles, some to be prophets, some to be evangelists, and some to be pastors and teachers, to prepare God's people for works of service, so that the body of Christ may be built up until we all reach unity in the faith and in the knowledge of the Son of God and become mature...Then we will no longer be infants, tossed back and forth by the waves, and blown here and there by every wind of teaching and by the cunning and craftiness of men in their deceitful scheming. Instead, speaking the truth in love, we will in all things grow up into Him who is the Head, that is, Christ."
Matthew 18:15-17: "If your brother sins against you, go and show him his fault, just between the two of you. If he listens to you, you have won your brother over. But if he will not listen, take one or two others along, so that 'every matter may be established by the testimony of two or three witnesses. If he refuses to listen to them, tell it to the church; and if he refuses to listen even to the church, treat him as you would a pagan or tax collector."
2 Thessalonians 3:14-15: "If anyone does not obey our instruction in this letter, take special note of him. Do not associate with him, in order that he may feel ashamed. Yet do not regard him as an enemy, but warn him as a brother."
1 Timothy 5:19-20: "Do not entertain an accusation against an elder unless it is brought by two or three witnesses. Those who sin are to be rebuked publicly, so that the others may take warning."
Luke 17:3: "If your brother sins, rebuke him, and if he repents, forgive him. If he sins against you seven times in a day, and seven times comes back to you and says, 'I repent,' forgive him."
1 Corinthians 5:6-12: "...Don't you know that a little yeast works through the whole batch of dough?...I am writing you that you must not associate with anyone who calls himself a brother but is sexually immoral or greedy, an adolater or a slanderer, a drunkard or a swindler. With such a man do not even eat. What business is it of mine to judge those outside the church? Are you not to judge those inside? God will judge those outside. 'Expel the wicked man from among you.'"