Peeking toward Easter: Richard Rohr speaking on the central symbol of the cross
"Most moral religions assume that there is an absolute dichotomy between good and evil. There is no faith required in the place where one may say, "I know I'm right, and I know you're wrong."
The cross undid forever the seemingly total dichotomy between good and evil. Because what happened was, the absolute worst thing--the killing of God (inside of the Christian metaphor)--became the redemption of the world. The absolute worst thing became the best thing. Now if that doesn't relativize your absolutist intellectual thinking....
If God can use the absolute worst symbolically worst thing possible and make it the redemption of the world then be careful when you talk about things that are bad things and worse things.
And it's more complex:
Those who did it were supposedly the good people, the leaders of church and state. And those who first of all allowed themselves to benefited from it were the seeming losers and outsiders, and those considered evil. This says at a central level, be careful how you see, things are not what they seem.
The things that look like the worst became the best. The people who look like the holy ones become the bad ones. The people who look like the bad ones ended up being the ones most open to it.
This is not an attempt to lead us into relativistic moral thinking, but rather into discernment. Because discernment isn't choosing between a good and a bad, but choosing more often than not between two partial goods. Holding seemingly opposing sides seriously...that is the space in which we grow...you go deep and you learn spiritual mystery. It is not rushing to closure and judgement.