Symbolism in chapter 1-4

The billboard with Dr. TJ Eckleburg has sparked my interest in the first four chapters of the book. He is mysterious. The book keeps referring to his watchful eyes. One example was when Tom and Nick were walking past the billboard. It said that Tom looked at the sign in a negative manner. Possibly because he felt guilty for cheating on his wife and that he was being watched. And no-one likes being watched when committing a sin or something that is frowned upon. It ruins reputation. We discussed in class that Dr. Eckleburg is meant to represent God in the book who is ever watchful on the characters. Also the billboard "sees all" in the area it is at. This appeals to me because I am a christian and believe in God and because I want to see how this billboard will affect the characters actions.