>>1287 (OP)
Forgiveness breeds future sinners who inherit the world. This is the central flaw in any ideology which permits it, especially towards those who are not high IQ or high empathy to begin with.
After a few short generations of forgiving, your enemies take over completely as they breed, win, and flourish while you do not.
Let's take the example of your father and the greedy executor. If we were to apply a Roman law standard [similar to ones that should be used on anyone who engages in ((( financial crime, thievery, usury, and loans with interest )))], it'd be straightforward that their hands would be cut off and this would be testament against repeating such actions forever. Crushing the testicles of rapists is another example.
From another angle, if we were to apply true biblical law, your father, the executor, and anyone they loved would be killed without mercy to end the bloodline forever. This was done to great effect, including killing all the women and children so as to avoid allowing that seed to continue.
Forgiveness is best used when only applied to those who are high IQ, high empathy, and ethnic European or Far East Asian. These are the only races capable of building civilization, and even then, it should only be applied to individuals with a history of forgiveness leading to a net reward to society rather than allowing more evil to reproduce and take root.