The building known as the Kaaba, or Cube, in the center of town, was dedicated to a deity named Allah, meaning “the god,” just as al-Lat was “the goddess.” Allah was unusual in that he didn’t specialize. He wasn’t a rain god or a wealth god or a war god or a love god; he was just an everything god. This failure to specialize may explain his relative unpopularity. People usually made offerings to gods for specific reasons: the health of a child, the future of a business enterprise, a drought, a quarrel, a romance. They preferred gods who were experts in their field to this nonspecific all-rounder of a deity.

“The Satanic Verses,” the Fatwa, and a Life Changed : The New Yorker

Fascinating insight into the early roots of Islam.