i think for a lot of people, Michelangelo set the mold with his "Adam" portrait in the Sistine chapel..... That is always the first image that pops in my mind when asked this...and the symbolism of this painting is amazing, the meaning behind every piece and part is pure genius...……. but actually I don't have a set idea, I think a light, a presence, a feel....more than anything, an all encompassing feel of contentment that a visual representation is not only not necessary but not even thought of.... the look of GOD never enters my mind.