Bathroom Monologue: Simple Question, Simple Brain

How might an omnipotent, omniscient entity with no true physical form simple enough for the human eye to observe appear if It wanted to be seen by people It deemed worthwhile?

-Galactus
-A cloud
-The planet earth
-The planet Jupiter (perhaps speaking out of the Great Red Spot)
-A burning bush
-A woman wearing the sun as a robe
-The father he never knew
-The mother he always wanted
-The rich aunt that always picked up the check
-Friedrich Nietzsche (only on April 1st)
-The opening above a maze
-A very small part of a very comforting but incomprehensible whole, which would give you a massive heart attack if you seriously thought about for so much as an instant
-Her entire life experience, second-for-second, year-for-year, boredom-by-thrill, worry-by-joy, birth-by-death
-A tractor-trailer (Guaranteed Overnight Delivery truck?)