The Bible says that we are the light of the world. We are not to hide our light under a basket where no one can see it. We are to let it shine forth and bring illumination to everyone.
Matthew 5:14 (NIV) "You are the light of the world. A city on a hill cannot be hidden. Neither do people light a lamp and put it under a bowl. Instead they put it on its stand, and it gives light to everyone in the house."
Some fundamentalists have interpreted this verse to mean that they are to evangelize the world and convert them to their separatist way of thinking by accepting their doctrine. However, what this verse really means is that we are to extend forgiveness to everyone as Jesus did. God does not forgive because He has never condemned anyone. Jesus does not condemn either. So, why did he offer forgiveness? To remind us that we are one with God. It was an encouragement to abstain from engaging in a battle with our ego and its thoughts of separation.
Being joint heirs with Jesus and therefore equal to God, we are to do what he did. Jesus offered unconditional love and forgiveness to everyone. This forgiveness brought healing because it brought at-one-ment (the atonement). By offering forgiveness we are removing guilt, condemnation, and judgment from ourselves and others because we are one. We are releasing thoughts that keep us in bondage to the old paradigm of rules and laws that Jesus came to correct.
If you think you cannot forgive someone or are not willing to forgive, you put yourself and your "offender" further into misery. You cannot be angry at someone and not harm yourself in the process. We are one with all souls everywhere because we are all part of God/Goddess. Our beliefs do not change this fact. All souls are connected with God/Goddess, but our unforgiveness keeps us from sensing the Divine presence and being truly happy.
Forgiveness is our function as the light of the world. The light of the world brings peace to every mind through our forgiveness. Let us not forget our function.