Many here believe that there is Absolute Light and Absolute Darkness.
So...
Imagine this situation.
The First Crusade, you are in the crusader army, and after taking the city, the commander orders to kill all prisoners. Among them is a boy, about six years old. You can save him, risking your life. But... you can also carry out the order and take on the sin of killing an innocent person... although a pilgrimage will absolve all sins, so what difference does it make, more or less...