Although venial sin is lite, we ought to not treat any sin lightly. If we understand sin beyond a moral philosophy we may rather understand it from the point of view of a relationship. Venial sins are akin to the thorns piercing the sacred head of our Lord, while mortal sins are the nails that crucify and kill our Lord. While the thorns cause less damage that is not mortal, they arise from the same spirit that wants to put an end to our Lord. They hurt and betray Him, and they ultimately lead to a lack of reverence towards Christ that snowballs into His own murder.