In Romans 8:31-34, Paul asked who can be against us, who can accuse us, and who can condemn us. The answer to all these questions is: No one!
Jesus fulfilled the entire Old Testament by suffering, rising from the dead, and having forgiveness preached to all the nations.
Jesus' power over the forces of evil demonstrated that the kingdom of God had come.
Faith is the means by which we are saved, obey God, and forgive our brothers and sisters.