if allah is powerful & merciful he could have converted all Non Muslims ( kafirs ) just on that date he started revealing his message through arch angle gaberiel
why arch angel delivered the koran only into the ear ( left or right ?? ) of mohMAD only ???
he could have deliverd his messsage to the whole world in different languages !! why it was only in ARABIC ???
salim are there any SURAs to give answers for the above questions ???