Note 2 — Chapter III · THE SPREAD OF ISLAM AMONG THE CHRISTIAN NATIONS OF WESTERN ASIA.

These stupendous conquests which laid the foundations of the Arab empire, were certainly not the outcome of a holy war, waged for the propagation of Islam, but they were followed by such a vast defection from the Christian faith that this result has often been supposed to have been their aim. Thus the sword came to be looked upon by Christian historians as the instrument of Muslim propaganda, and in the light of the success attributed to it the evidences of the genuine missionary activity of Islam were obscured. But the spirit which animated the invading hosts of Arabs who poured over the confines of the Byzantine and Persian empires, was no proselytising zeal for the conversion of souls. On the contrary, religious interests appear to have entered but little into the consciousness of the protagonists of the Arab armies.2 This expansion of the Arab race is more rightly envisaged as the migration of a vigorous and energetic people driven by hunger and want, to leave their inhospitable deserts and overrun the richer lands of their more fortunate neighbours.3 Still the unifying principle of the movement was the theocracy established in Medina, and the organisation of the new state proceeded from the devoted companions of Muḥammad, the faithful depositaries of his teaching, whose moral weight and enthusiasm kept Islam alive as the official religion, despite the indifference of those Arabs who gave to it a mere nominal adherence.4 It is not, therefore, in the annals of the conquering armies that we must look for the reasons which lead to the so rapid spread of the Muslim faith, but rather in the conditions prevailing among the conquered peoples.