One may speak of One God, and speak of Him in three persons, without worshipping three gods.
Consider the argument of de re-de dicto.
Bob and Julie are newlywed students. Bob studies hard and late at night, rising early to attend class and returns home after noontime. Every morning Julie arises a little later and walks up the sunlit lane to a bakery for croissant and coffee. Every morning about 830 she passes an elderly gent, who once introduced himself as Jim, walking his little dog and allowing her to pet the dog. They daily exchange pleasantries and talk about this or that over a three month period, smiling and amiably continue along their different ways.
Several months later, Bob has been cramming hard for a mid-term and remarks, "That miserable Dr. Smith, he knows we haven't covered this material in the course, yet he is failing everybody even though we slave without sleep, studying topics he never teaches us!"
Julie responds, "I have never met Dr. Smith, but surely he isn't that miserable, is he?"
Bob exclaims, "Of course you've seen him, everybody has seen him, he's an institution at this cruddy ol' place and probably will be buried here!"
"Julie responds, "No, I really don;t know who he is, but why don't we go have a croissant and relax until your exam...
Bob and Julie walk up the lane as as they approach the bakery, out around the corner comes Jim, walking his dog, surprising Bob, when Julie interrupts and says, Oh, Jim,..please meet my husband, Bob,..and Bob please meet Jim..."
At this point Bob looks at Julie aghast and exclaims, "You lied, you've known Dr. Smith all along!"
In this case one could speak about the same Professor as a different person, on of the subject and one of the object, nevertheless the same Professor.
Doesn't sound like it's from Scripture
Simple faith is lasting faith. The most spiritual people I know are simple -- they don't concern themselves with a Trinity of persons or three gods. They worship Jesus Christ in all His Glory and Dominion.