Those stalwart Christians have spearheaded the modern - day Kingdom - preaching work and have exposed Satan as the ruler of this world.
يُكِنُّ ٱلشَّيْطَانُ إِبْلِيسُ ٱلْبُغْضَ ٱلشَّدِيدَ لِلْبَشَرِ ،‏ وَخُصُوصًا ٱلَّذِينَ يَخْدُمُونَ يَهْوَهَ .‏