[David Maes]

Imagen this heavy rock, fixed on a long cable; this long cable is fixed on a tall crane;

There are two persons; one person takes the rock in his hands ( the rock still connected on the cable which is connected on the crane) and walking, he takes up a distance from the other person. Then he lets go the rock (so I think potential energy gets kinetic), and the rock swings to the other person. The fact that the rock will hit the other person depends on his distance to the first one.

What I mean is, the fact that the rock hits this person or not is dependent on his distance; if he's close enough, he will get hit by the rock; if he's far enough he won't get hit by it.

So God won't hold the rock to hit the person if he's close enough; on the other hand, God won't make the rock hit the person if he's far enough.

So you could say God made the law of conservation of energy. But He won't intervene in the fact that the person will get hit by the rock or not.