How numerous the people who engaged in contests with Muḥammad, the Apostle of God, and were eventually reduced to naught, inasmuch as they were powerless to bring forth proofs similar to that which God had sent down unto Him. Had they been abashed and modest, and had they realized the nature of the proofs wherewith He was invested, they would never have challenged Him. But they regarded themselves as champions of their own religion. Therefore God laid hold on them according to their deserts and vindicated the Truth through the power of Truth. This is what ye clearly perceive today in the Muḥammadan Revelation. Who is the man amongst you who can challenge the exalted Thrones of Reality in every Dispensation, while all existence is wholly dependent upon Them? Indeed, God hath wiped out all those who have opposed Them from the beginning that hath no beginning until the present day and hath conclusively demonstrated the Truth through the power of Truth. Verily, He is the Almighty, the Omnipotent, the All-Powerful. XVII, 11. “O Ye who are invested with the Bayán! Be ye watchful ...” O Ye who are invested with the Bayán! Be ye watchful on the Day of Resurrection, for on that Day ye will firmly believe in the Vahíd of the Bayán, though this, even as your past religion which proved of no avail, can in no wise benefit you, unless ye embrace the Cause of Him Whom God shall make manifest and believe in that which He ordaineth. Therefore take ye good heed lest ye shut yourselves out from Him Who is the Fountain-head of all Messengers and Scriptures, while ye hold fast to parts of the teachings which have emanated from these sources. XVII, 15. “Consider how at the time of the appearance of every ...” Consider how at the time of the appearance of every Revelation, those who open their hearts to the Author of that Revelation recognize the Truth, while the hearts of those who fail to apprehend the Truth are straitened by reason of their shutting themselves out from Him. However, openness of heart is bestowed by God upon both parties alike. God desireth not to straiten the heart of anyone, be it even an ant, how much less the heart of a superior creature, except when he suffereth himself to be wrapt in veils, for God is the Creator of all things.