For a while the captive remained resolute, preferring death to the disgrace of turning a renegado; but the wily Caliph, who had taken a deep and sudden interest in the fortunes of the youth, knew well the spring, by the touch of which his heart was most likely to be affected.
He pointed out to Demetrius prospects of preferment and grandeur, while he assured him that, in a few days, Damascus must to a certainty surrender, in which case his mistress must fall into the power of a fierce soldiery, and be left to a fate full of dishonour, and worse than death itself; but, if he assumed the turban, he pledged his royal word that especial care should be taken that no harm should alight on her he loved.
Demetrius paused, and Abubeker saw that the heart of his captive was touched.

He drew pictures of power, and affluence, and domestic love, that dazzled the imagination of his hearer; and while the prisoner thought of his Isabelle, instead of rejecting the impious proposal, as at first he had done, with disdain and horror, his soul bent like iron in the breath of the furnace flame, and he wavered and became irresolute.
The keen eye of the Caliph saw the working of his spirit within him, and allowed him yet another day to form his resolution.

When the second day was expired, Demetrius craved a third; and on the fourth morning, miserable man, he abjured the faith of his fathers, and became a Mussulman.
Abubeker loved the youth, assigning him a post of dignity, and all the mighty host honoured him whom the Caliph delighted to honour.

He was clad in rich attire, and magnificently attended, and, to all eyes, Demetrius seemed a person worthy of envy; yet, in the calm of thought, his conscience upbraided him, and he was far less happy than he seemed to be.
Ere yet the glow of novelty had entirely ceased to bewilder the understanding of the renegade, preparations were made for the assault; and after a fierce but ineffectual resistance under their gallant leaders Thomas and Herbis, the Damascenes were obliged to submit to their imperious conqueror, on condition of being allowed, within three days, to leave the city unmolested.
When the gates were opened, Demetrius, with a heart over-flowing with love and delight, was among the first to enter.

He enquired of every one he met of the fate of Isabelle; but all turned from him with disgust.