AND, LO, God accepted, through the prophets, this solemn pledge [from the followers of earlier revelation]: "If, after all the revelation and the wisdom which I have vouchsafed unto you, there comes to you an apostle confirming the truth already in your possession, you must believe in him and succour him. Do you" - said He - "acknowledge and accept My bond on this condition?" They answered: "We do acknowledge it." Said He: "Then bear witness [thereto], and I shall be your witness.