(Those who believe not therein) in the coming of the Hour, i.e. Abu Jahl and his host (seek to hasten it, while those who believe) in Muhammad (pbuh) in the Qur'an and in the coming of the Hour, i.e. Abu Bakr and his fellow believers (are fearful of it) are fearful of the coming of the Hour, its horrors and terrors (and know that it) i.e. the coming of the Hour (is the Truth) it will happen. (Are not they who dispute, in doubt concerning the Hour, far astray) from the Truth and guidance?