John Lewis said this quote

I always understood the idea of the ultimate redeemer, Christ on the cross. But now I was beginning to see that this is something that is carried out in every one of us, that the purity of unearned suffering is a holy and affective thing It affects not only ourselves, but it touches and changes those around us as well. It opens us and those around us to a force beyond ourselves, a force that is right and moral, the force of righteous truth that is at the basis of human conscience. Suffering puts us and those around us in touch with our consciences. It opens and touches our hearts. It makes us feel compassion when we need to and guilt if we must.