穆罕默德抄襲聖經,再加上月神阿拉當時已經多人拜,穆罕默德就話自己是阿拉的先知,以成為政治和宗教上的一個領袖。所以可蘭經與聖經有相似之處一點都不出奇,不過阿拉與聖經中的神絕對不是同一位神。雖然伊斯蘭教的祖先都是阿伯拉罕,但係當時異教風行,阿伯拉罕沒改名之前叫亞伯蘭,出身都是異教徒。以色列人自己一直都守不住對神的信仰,更何況外邦人呢。
可蘭經這樣說:
(25:2) The One to whom belongs the sovereignty of the heavens and the earth, and He did not take a son, and He does not have any partner in kingship. And He created everything and measured it precisely.