|The nodal structure of the "God concept" according to American Christian to atheism deconverter Christopher Redford, giving indication that the notion of a personal God is one wherein one has a "personal relationship" with the god.|
The following are example quote usages:
“The anthropomorphic dogma is likewise connected with the creation-myth of the three aforesaid religions, and of many others. It likens the creation and control of the world by God to the artificial creation of a talented engineer or mechanic, and to the administration of a wise ruler. God, as creator, sustainer, and ruler of the world, is thus represented after a purely human fashion in his thought and work. Hence it follows, in turn, that man is godlike. "God made man to His own image and likeness." The older, naive mythology is pure "homotheism," attributing human shape, flesh, and blood to the gods. It is more intelligible than the modern mystic theosophy that adores a personal God as an invisible—properly speaking, gaseous—being, yet makes him think, speak, and act in human fashion; it gives us the paradoxical picture of a "gaseous vertebrate.”— Ernst Haeckel (1895), The Riddle of the Universe 
“I have never seen the slightest scientific proof of the religious theories of heaven and hell, of future life for individuals, or of a personal god.”— Thomas Edison (1911), Interview with Edward Marshall 
“I do not believe in a personal god and I have never denied this but have expressed it clearly. If something is in me which can be called religious then it is the unbounded admiration for the structure of the world so far as our science can reveal it.”— Albert Einstein (1954), Reply letter to an Italian-born American atheist on clarification of his religious views (Mar 24)
“I have repeatedly said that in my opinion the idea of a personal god is a childlike one. You may call me an agnostic, but I do not share the crusading spirit of the professional atheist whose fervor is mostly due to a painful act of liberation from the fetters of religious indoctrination received in youth. I prefer an attitude of humility corresponding to the weakness of our intellectual understanding of nature and of our own being.”— Albert Einstein (c.1955)
“There is nothing that supports the idea of a personal God.”— Ernst Mayr (c.2000) 
1. (a) Haeckel, Ernst. (1895–1899) Die Welträthsel ("world-riddle"); also spelled Die Welträtsel. Jena: Publisher.
(b) Haeckel, Ernst. (1905). The Riddle of the Universe: at the Close of the Nineteenth Century (ch. VI: The Nature of the Soul, pgs. 88-108; ch. XI: Immortality of the Soul, pgs. 188-210; ch. XII: The Law of Substance, pgs. 211-32; soul-snow, pg. 201; affinity, pg. 224), trans. Joseph McCabe. Harper & Brothers.
(c) The Riddle of the Universe – Wikipedia.
2. Edison, Thomas. (1911). “Thomas A. Edison on Immortality: the Great Inventor Declares Immortality of the Soul Improbable” (doc) (Interview by Edward Marshall), The Columbian Magazine, 3(4), Jan.
3. Shermer, Michael and Sulloway, Frank J. (2000). “The Grand Old Man of Evolution”, Skeptic, 8(1): 76–82.
● Personal god – Wikipedia.