In fact, in the book of Genesis, which relates the lives of the patriarchs, the word “Almighty” occurs only six times, whereas the personal name Jehovah occurs 171 times in the primitive Hebrew Bible text.
... In this regard, after pointing out that ʼEl Shad·dayʹ is not a name, Douglas’ New Bible Dictionary comments (p. 479): “The former revelation, to the Patriarchs, concerned promises belonging to a distant future; it supposed that they should be assured that He, Yahweh, was such a God (ʼel) as was competent (sadday) to fulfill them.