by W. Bouguereau (1897)
Well, after our brief tour in the tiny room, I decided to help them understand what is sin. I had them line up shoulder to shoulder facing the crucifix on the wall of the Our Lady of Fatima chapel. I had them take one step backwards for a venial sin, of which we tried to think up examples, and two steps back for mortal sins, also with examples. Once they had traveled to nearly the back of the room, I explained to them that that is what sin does; it causes us to move away from God (illustrated by God the Son on the crucifix). He doesn't move. God never changes. We are the ones who change because of sin.
Then we talked about contrition. Imperfect contrition--saying we're sorry because we're supposed to do so--brings us part of the way back to God. We illustrated this be taking a couple of steps forward. However, when we have perfect contrition--in other words, we are truly sorry for our sins from our hearts--we come all the way back to God. The children came all the way back to the front of the room.
Sin moves us away from God. God never moves, changes, or turns away from us. He waits for our confession and our perfect contrition and welcomes us back to Himself with open arms.