Morning Scepticism: Intervention

It's understandable that when a loved one is suffering through a life-threatening medical condition that if they are devout they will attribute the improvement to the grace of a benevolent deity. Though I wonder why a benevolent deity would put the loved one through such suffering in the first place. The only rationale is that without the suffering there is nothing to be thanked for, stopping a tumour in its early stages is undetectable but stopping it once it turns terminal is a visible miracle. So what good is a miracle if no-one can recognise it? The suffering therefore is a necessary part of the exercise, the hardship is so the benevolent deity can get the credit.