Just because I have forgiven someone for doing something wrong, it doesn't mean God will forgive it. because it is always a matter of whether it is against God's will, against His Law or not. If God has said it is wrong then something is wrong. we have no right to forgive it. If God does not forgive it, even it is done to us personally, we have no right to forgive it. We are not capable of judging anyone rightly because we sin also. And just because we forgive it doesn't mean God has to forgive it. We might forgive it for some reason that is not right, for example, that we think if we show mercy so God will be merciful to us. After all, Jesus says 'blessed are the merciful, for they shall receive mercy'. But that does not include for everything, but only for reasons God is willing to show mercy. But God will not show mercy to anybody who does not accept Jesus Christ his Lord and savior and commit to follow him. and will not repent of the sin. So, they have to first be willing to repent, then they have to follow Jesus Christ and then they have to obey God from then on or repent when they fail to. Anybody who believes in God, but doesn't repent of their sins is going to be lost. and they are not forgiven for anything. However, God still expects us to bring the sins of others to their attention if needed. So when it really comes down to forgiving, we are told to forgive someone because God is forgiving in nature and we should be like Him. A forgiving nature doesn't mean He forgives people for everything. And he doesn't forgive every one. So, we shouldn't either. On the opposite side of that we are also told not to judge other people for things that are out of God's judgement. For example, if we think it is wrong to sing with musical instructments and if we see somebody else sing with musical instruments we shouldn't just say ,'Oh, that is wrong' and judge them for it because God doesn't say that it is wrong . We are commanded to sing with the spirit and understanding when we sing. I can do it with musical instrument or without. It will only be alright if we are children of God, disciple of Jesus. Otherwise, doing right things will not help us. When I am accusing someone or holding somebody accountable it is only because God said it is wrong. It has nothing to do with me, my righteousness or lack of it. Pointing their sin out to them doesn't mean I am judging them because God has said it was wrong. It 's not my judgement; it is God's judgement. And then, on the other hand, just because I decide to forgive him does not mean I will be forgiven. That doesn't mean God will forgive either them or me. I still have to repent of my sin and that person still has to repent of their sin. You point sin out to them for their good, not for your benefit other than it is the right thing to do. When Jesus said make sure that when you look at somebody that first remove the beam in your eye before worrying about the spec in theirs, he was using a metaphor involving the eyes. In other words, your vision will be distorted with a beam sticking in your eye, so how can you possibly be able to help someone with their sin. Your sin is an obstacle and anytime you do not repent of your sins you will have this obstacle to first remove before being able to point out the sins of others. After you do so, you might find that they have not sinned. In the above example of singing, you might find out that singing with or without instruments is all acceptable to God and so you should not judge. That would be like removing the beam from your eye. Now you can see properly and notice that your friend does not have a spec after all.