Parable of the Foolish Shipmate
It is said, SHALL ONE MAN SIN, AND WILT THOU BE WROTH WITH ALL THE CONGREGATION? (Num 16:22).  R Simeon b Yohai taught:  A parable.  It is like men who were sitting in a ship.  One took a borer and began boring beneath his own place.  His fellow travellers said to him:  What are you doing?  He said to them:  What does that matter to you, am I not boring under my own place?  They said:  Because the water will come up and flood the ship for us all. Lev R 4:6