surah 74, verse 30: "We have appointed as wardens of the Fire none but angels; and We have made this number for no other reason than to confound the disbelievers; so that those to whom the Scripture has been given may have certainty and the believers may increase in faith; and so that those to whom the Scripture has been given and those who believe may be rid of doubt; and so that those in whose hearts there is a disease and those who disbelieve may say"
The "miracle" of 19, is a recent find - 1974. Since the discovery, and particularly in the case of someone like UBL this verse has been used as a prophetic call to war. I honestly do not know everything behind the number 19, I have been trying to figure it out since late 2001 and it still stumps me a bit. ;-)
surah 74, verse 30 We have appointed as wardens of the Fire none but angels; and We have made this number for no other reason than to confound the disbelievers; so that those to whom the Scripture has been given may have certainty and the believers may increase in faith; and so that those to whom the Scripture has been given and those who believe may be rid of doubt; and so that those in whose hearts there is a disease and those who disbelieve may say : 'What could Allah have meant by this curious numeration!' Thus Allah sends astray whom He will and guides whom He will! None knows about the armies of your Lord but Him; and this is nothing but a Reminder for mankind!