This is why Jesus came to teach forgiveness

"Love is a form of injustice. But before learning to manifest this injustice, i.e. love, we must learn to manifest justice. Moses imposed on the Jewish people ruthless laws upholding such principles as 'an eye for an eye and a tooth for a tooth'. The slightest error had to be punished. There was never any question of leniency or forgiveness. But that was understandable, since humankind was at a degree of evolution where it needed stringent rules. At that time, justice was already considerable progress in itself. But this situation could not last for ever, because God is clement and merciful, and human beings, who were created in His image, had to become clement and merciful like Him. This is why Jesus came to teach forgiveness. If you look at how he behaved with the disgraced and the sinners you see that he transgressed the law of justice by his attitude, but by transgressing the law of justice, he instituted the law of love."