Three Years of Secret Call
It is well-known that Makkah was the centre for the 'Arabs, and housed the custodians of Al-Ka'bah. Protection and guardianship of the idols and stone graven images that received veneration on the part of all the Arabs lay in the hands of the Makkans. Hence the difficulty of hitting the target of reform and rectitude in a place considered the den of idolatry. Working in such an atmosphere no doubt requires unshakable will and determination, that is why the call unto Islam assumed a clandestine form so that the Makkans should not be enraged by the unexpected surprise.