108وَيَقولونَ سُبحانَ رَبِّنا إِن كانَ وَعدُ رَبِّنا لَمَفعولًاMuhammad Asadand say, "Limitless in His glory is our Sustainer! Verily, our Sustainer's promise has been fulfilled!"1This may be an allusion to the many Biblical predictions of the advent of the Prophet Muhammad, especially to Deuteronomy xviii, 15 and 18 (cf. surah 2, note 33). In its wider sense, however, the "fulfilment of God's promise" relates to His bestowal of a definitive revelation, the Qur'an, henceforth destined to guide man at all stages of his spiritual, cultural and social development.