Thus scientific laws only describe how things normally behave. They cannot explain the ultimate cause behind that which happens. That, we believe, rests with God. He is the ultimate WHY of all forces. One cannot deny miracles today because they go against scientific laws, against that which can be observed today.
Miracles are by definition unique and without precedent.
Christians believe that matter operates according to scientific laws because God maintains the universe in this way, so that usually the effects of physical actions are predictable. That does not mean God may not at some venture vary the pattern. It is at these times that we find miracles. He may choose to alter it. Yet there is always a purpose behind His action.