I was reading about David and Bathsheba (2 Samuel 11) last night. It really is quite a fascinating story, and an excellent case study on sin. I don't think I'd be exaggerating to say that EVERYONE knows that what David did was wrong - even David himself knew it (see 2 Samuel 12). Yet, we read of David doing what so many of us seem to do - planting one sin and harvesting a crop of evil. To try to cover up his sin David lied, murdered, and hurt many people. To think all of this could have been avoided if David had only done what he was supposed to do - work. His job as king was to lead his people to war in the spring, as was customary for them. But for whatever reason, David did not fulfill his obligation. And in his boredom, he went to the roof top... and so it began.
I was just reading up (thank you Wikipedia) on avalanches. It seems as though it takes a very particular situation for an avalanche to occur and then "when an avalanche occurs, as the snow slides down the slope any slab present begins to fragment into increasingly smaller tumbling fragments. If the fragments become small enough the avalanche takes on the characteristics of a fluid." This explains why people get buried under avalanches and not run over. As the avalanche gains momentum, it has more power to do harm.
If David had made one different decision - and keep in mind it wasn't an especially spiritual decision, but only to do his job - he would have avoided the whole situation. It helps me realize why we're told in Colossians 3:23 to do our work as if we were working for God.