I start this in the Name of Allah the most beneficent the most Merciful all praise is due to Him Master of all the worlds.
I was listening through a lecture about atheism and etc, and i came about this accusation from one atheist who explained why God is not beneficent nor merciful (naudhubillaah) by stating that for example bone cancer in children is something that is ruthless and kills without the fault of the person, and is not in our control...
How do we Muslims reply to this crooked accusation and how do we debunk it? How can we prove Allah's goodness even with the existence of cancer's etc...
Jazakallah...
By the way this is the video