There are many common grounds between Islam and other undistorted Abrahamic religions, one of which is the belief in One God, whom Muslims call Allah. Monotheism is at the heart of every belief in Islam, and the first step in entering into this religion is having faith and confession to this fact. This matter is highlighted in Salam Islam's new "A Verse A Day."
To find out more about this verse of the Quran see this infographic.