Answer: The word 'God' we use to refer to the Creator and Sustainer of all things is just one of several generic names that refer to deity. It can be used to refer to real or even false deities.
When Jesus (God in the flesh) was on the earth, he warned his disciples and us by extension, to be wary not to worship or follow the teachings of those who are imposters. They desire to be worshipped or believed, as if they were God, but in truth are LIARS (Matthew 24:24).
The Bible, for the most part, does not offer us personal references for God but rather offers terms that refer to his function or are one of his many titles. Even the unpronounceable YHVH (also known as the Tetragrammaton, the four Hebrew consonants that make up YHVH) translates as 'the Eternal One who preserves' as Frank T. Seekins shows us in his little booklet "Hebrew Word Pictures" published in 1996. A variation of this title for God is "I AM."
The vast majority of human designations do not relate to any title, skill or power a person may possess. In all likelihood, if God does have a personal way of referring to himself, He will not reveal it until after we are resurrected from the dead.
I will write on them (those who overcome and are resurrected) the name of my God . . . I will also write on them my new name (Revelation 3:12)
Jesus the Christ or Messiah of the New Testament is the same being as YHVH or JHVH of the Old Testament who created Adam and Eve and spoke to Abram and Sarah and their family. This means he was the only God with whom humans have become acquainted since Creation. Until the Lord came no one knew the Father. References to him are oblique in the Old Testament as the 'Ancient of Days' or even YHVH as well.
"Nor does anyone know the Father except the Son, and the one to whom the Son wills to reveal Him" (Matthew 11:27)
"In the beginning was the Word, and the Word was with God . . . He was in the world, and the world was made through Him, and the world did not know Him. He came to His own, and His own did not receive Him. But as many as received Him, to them He gave the right to become children of God . . . (John 1:1, 10 - 12)
"As the Father knows Me, even so I know the Father; and I lay down My life for the sheep " (John 10:15)
Please visit our larger list of the different names for God and Jesus Christ (who are both members of the Godhead).