And when Abram was ninety years old and nine, the LORD appeared to Abram, and said unto him, I am the Almighty God; walk before me, and be thou perfect. -- Genesis 17:1
"He is a God that is enough; or, as our old English translation reads it here very significantly, I am God all-sufficient. Note, The God with whom we have to do is a God that is enough. He is enough in himself; he is self-sufficient; he has every thing, and he needs not any thing. He is enough to us, if we be in covenant with him: we have all in him, and we have enough in him, enough to satisfy our most enlarged desires, enough to supply the defect of every thing else, and to secure to us a happiness for our immortal souls."
-- an excerpt of Matthew Henry's from his commentary on the translation of "Almighty God" in Genesis 17:1