The False Doctrine is thinking that you can dispel the hatred and unforgiveness in your heart. YOU CAN'T. Only the Lord Jesus Can. And He does that by giving you a New Heart. One not filled with hate and unforgiveness.
About unforgiveness, the passage that was being discussed was this from Mat 18: "32 Then his lord, after that he had called him, said unto him, O thou wicked servant, I forgave thee all that debt, because thou desiredst me: 33 Shouldest not thou also have had compassion on thy fellowservant, even as I had pity on thee? 34 And his lord was wroth, and delivered him to the tormentors, till he should pay all that was due unto him. 35 So likewise shall my heavenly Father do also unto you, if ye from your hearts forgive not every one his brother their trespasses."
That only the Lord can help us overcome unforgiveness, agreed. But the question here is, is being forgiven/justified once enough to go to Heaven? If we see here, the wicked servant was forgiven once, then he refused to forgive his neighbor. We know for sure that he was truly forgiven (lest someone say, "He was never forgiven/justified in the first place"), because the Master explicitly says so, in judging him: "I forgave thee ... should you not also have compassion ... just as I had pity on thee"). God forgives us and gives us a new heart. He both empowers us and and also expects us to forgive others.
But He doesn't take away our free will. If, after being truly forgiven, we refuse to forgive others, God won't forgive us our future sins, and we can go to Hell, if we don't repent over that unforgiveness. That's what Our Lord teaches here very clearly and He also teaches it in Our Lord's Prayer. Let me ask you, if forgiveness were a one time thing, why would Our Lord tell us to ask for it often, just as we ask often for our Daily Bread? It is not a one time thing. 1 Jn 1:9 shows that.
1 Jn 1:9 "If we confess our sins, he is faithful and just and will forgive us our sins and purify us from all unrighteousness."
Salvation and Eternal Life is NOT something we work to earn. It is not something we can emulate. It is what Christ gives us when we come to Him and ask.
However, as 2 Pet 1:9-11 says, we are commanded by the Lord to do certain things, if we hope to never stumble. What things? Let me quote the passage:
"9 But whoever does not have them is nearsighted and blind, forgetting that they have been cleansed from their past sins. 10 Therefore, my brothers and sisters, make every effort to confirm your calling and election. For if you do these things, you will never stumble, 11 and you will receive a rich welcome into the eternal kingdom of our Lord and Savior Jesus Christ."
This passage also says that just being cleansed once from past sins is not a guarantee of never stumbling. It says to make every effort to confirm your calling and election. How to do that is explained in 2 Pet 1:5-8:
5 For this very reason, make every effort to add to your faith goodness; and to goodness, knowledge; 6 and to knowledge, self-control; and to self-control, perseverance; and to perseverance, godliness; 7 and to godliness, mutual affection; and to mutual affection, love. 8 For if you possess these qualities in increasing measure, they will keep you from being ineffective and unproductive in your knowledge of our Lord Jesus Christ.
There's an idea popular today that any kind of effort to progress in spiritual life is something wrong. Sorry, that's not what the Bible says. God forgives our sins, and gives us abundant grace to overcome. He also expects us to put efforts to do so.
Be back shortly to answer the others who responded to me. God Bless.