One good friend challenged me to show God "otherwise" he said " I won't believe there is God".It may be good topic for debate but the truth is, could see the breeze?could you see the current which operates all the machines even though it is invisible?could you show love ?what is the shape of love?.There are some things which we can only feel ,give you peace of mind.After all no one can see the soul but almost everyone accepts that they have soul.See the works of God of course Nature is the work of God.