During Pirates of the Carribbean: At World's End, the following exchange occurs:
Jones: Ah. Love. A dreadful bond. And yet, so easily severed. Tell me, William Turner. Do you fear death?
Jack: Do you? Heady tonic, holding life and death in the palm of one's hand.
Jones: You're a cruel man, Jack Sparrow.
Jack: Cruel is a matter of perspective.
Jones: Is it?
Then Davy Jones stabbed Will Turner even though his life was at stake. Why did he stab Will risking his life? He seemed a very clever and tactical captain. Still did this. What was the motive?