Islam is the religion of all Messengers, because it stands steadfast on the creed of monotheism, and the rejection of any partnership. Those Messengers preached Islam to their people at various epochs of human history. When lapses occurred, and apostasy reigned with the desertion of Faith, Allah the Almighty in His Merciful Grace sent another Messenger with the true religion to guide people once again to His providence and to purge their souls.
At the time of the revelation of the Faith unto Muhammad (sal), the service and adoration of God had sunk to an abyss of clamorous censure of the human mind and conscience. Religion had lost its fundamentals and its spirits. It was transmogrified into idolatry.
The testament of Abraham (pbuh) was lost. The original Revelation of Moses (pbuh) is now extinct, the present ‘Pentateuch’ is a surviving recession but completely deformed. The Scriptures of Moses (pbuh) and Jesus (pbuh) are still extant, though not in their pristine form . The Jews went after false Gods, and the Christians invented the Trinity or borrowed it from Paganism. The Traditions of the Prophets had been mutilated and distorted, and polytheism became the general creed of people, save those who were guided by The Graces of God to keep the Faith in The One True Deity.
And as the world’s moral standards deteriorated, and humanity was led astray through the vicissitudes of life, and no nation was spread the perversion which ensued when people continued to worship idols or believed in plurality of gods, The Divine Providence then ordained the revelation of a universal Message to mankind so as to salvage man from his calamitous fate.
“Indeed, the religion in the sight of Allah is Islam. And those who were given the Scripture did not differ except after knowledge had come to them – out of jealous animosity between themselves. And whoever disbelieves in the verses of Allah , then indeed, Allah is swift in [taking] account. ”