We know that many elements of both Christianity and Islam are based on incidents in the Middle East and on the writings in the Old Testament and the Talmud.
It is not inconceivable that Mohammed took stories about the creation of mankind and various 'gods' to create his religion. He named his god ALLAH, but the worship of the moon and the moon crescent as their 'symbol' make it seem more than coincidence. JEHOVAH in the Bible referring to the 'christian' GOD (as far as we know), is another story.
shalom b'SHEM Yah'shua HaMashiach Pre-Islamic Arabia In pre-Islamic Arabia, Allah was used by Meccans as a reference to the creator-god, possibly the supreme deity.[21] Allah was not considered the sole divinity; however, Allah was considered the creator of the world and the giver of rain. The notion of the term may have been vague in the Meccan religion.[8] Allah was associated with companions, whom pre-Islamic Arabs considered as subordinate deities. Meccans held that a kind of kinship existed between Allah and the jinn.[22] Allah was thought to have had sons[23] and that the local deities of al-ʿUzzā, Manāt and al-Lāt were His daughters.[24] The Meccans possibly associated angels with Allah.[25][26] Allah was invoked in times of distress.[26][27] Muhammad's father's name was ʿAbd-Allāh meaning "the slave of Allāh".[26]
Most scholars believe "Jehovah" to be a late (ca. 1100 CE) hybrid form derived by combining the Latin letters JHVH with the vowels of Adonai, but some hold there is evidence that the Jehovah form of the Tetragrammaton may have been in use in Semitic and Greek phonetic texts and artifacts from Late Antiquity.[5][6] Others say that it is the pronunciation Yahweh that is testified in both Christian and pagan texts of the early Christian era
from wiki
So....basically we agree.