16 Preface أَأَمِنتُم مَن فِي السَّماءِ أَن يَخسِفَ بِكُمُ الأَرضَ فَإِذا هِيَ تَمورُAhmed AliAre you so unafraid that He who is in Heaven will not open up the earth to swallow you, when it will begin to tremble?