God wants you to be free from the burden and anger of holding a grudge!
Because of sin and the world's brokenness, we are guaranteed to have hurt and pain in our lives. We can even be wronged by other Christians; no one is perfectly selfless and loving all the time. God has a plan for wholeness and healing in our hearts and minds: it all starts with forgiveness. Choosing to forgive is not an easy or simple task, but it brings us freedom and allows us to step into a lifestyle of deep peace. We're called to follow the example of Jesus, who loved and forgave us even when we were enemies of God.
Bear with each other and forgive one another if any of you has a grievance against someone. Forgive as the Lord forgave you.