My thought:

                      No one is perfect in life . Everyone errs in some ways or the others . We have committed numerous mistakes in our lives too , and have been forgiven many times and maybe sometimes not. Keeping grudges does not help you , doesn't give you any peace of mind . So it is wise enough to forgive those who are really sorry and even those who are not really sorry rather than making our own life sour . And forgiveness can mend many broken relationship , renews a bond between people . Forgiveness and kindness will make your life  more happier  , make you more positive . Sometimes it might take time to forgive but , at least one should really put efforts to forgive and move forward .