So, here we go. Why do we need to forgive? Why should we forgive someone who cheated, slandered, stole or wronged us in any one of a million different ways.
Often we did nothing to deserve it, it seems gratuitous from our perspective and may well be; so why should I, who was wronged, forgive the person who afflicted me with their messed up attitude to life?
Basically a choice has been given to us.