We all know the saying, "free as a bird." But what most of us don't know is that "birds are instinctively limited to the land that they fly over and slaves to the air they fly through. They have their own invisible barriers and don't know enough to break through this barrier if their area is suddenly changed by nature's compulsions such as strong winds and storm which could plow through it. They are in short, captive of their own instincts from which they sometimes cannot escape behind their invisible prison bars." (taken from https://www.bible.com/reading-plans/225-draw-near/day/6)
We, as humans, can also be compared to a bird's cage. We are caged behind our bitterness and unforgiveness. It is invisible, we cannot see it, but yet we are lost in its bitterness. The only way we can break through this invisible prison is by obtaining mercy from God only as we are merciful. Because judgment is without mercy to those who has shown none. Alternatively, those who have learned to forgive are free because mercy triumphs over judgment. (James 2:13)
One can never be free unless you break through and win over the invisible prison of an unforgiving spirit and those who seek Jesus' forgiveness must first find forgiveness. Letting go of their anger to find real freedom.
Think of a person who has you bitter and then forgive them. They do not need to know you have forgiven them. Then throw their transgressions into your lake of forgetfulness, just as God does for our own transgressions against Him.
Until my next rant... LOVE ONE ANOTHER!