In your opinion what is the most POWERFUL verse in the Qur'an?

the whole holy quran ...is powerful ...ayte kursey ...yes ..it has great defination......but i will just GIVE THE MOST SIMPLE >>>>AND MOST RECITED in the world... >>>>>...MOST FAVOURABLE for mercy seekers like me .......Most explanations in verses.....that is ..BISMILLAH HIRa REMAN niReahEEm..............hz abdullah bin abbas r.a says ..imam ali said ,,if he just start giving you the explanation of bismallah ....40 camels will not be even enough to carry the written explanation ..and it will not be complete yet....[it has significance ...in terming as seal....in research of ...19 ]