Dude, the dictionary has definitions of all the gods too, does that mean they exist?
Did you miss the part in the definitions that talks about them being mythology?
http://www.dictionary.com/browse/zeus?s=t
I did yea because it doesn't say anything about that, the supreme deity of the ancient Greeks, a son of Cronus and Rhea, brother of Demeter, Hades, Hera, Hestia, and Poseidon, and father of a number of gods, demigods, and mortals; the god of the heavens, identified by the Romans with Jupiter. So now Zeus has to be real because it's in the dictionary, right?
Of course Zeus and other gods are real. They must have some sort of reality for them to be in the dictionary.
The pint is, that when you look at how they are described, they are shown to be lied about, and to be weak... not really gods... but slightly more in the direction of God than people are.
The real God of the universe is being shown to be almighty and real. How? Many ways. But one way is easily seen. The Bible that talks about God, is spreading around the world way more than the gods of the nations. In fact, if there are any Zeus believers regarding his godhood, they are few and far between.
God is real. Zeus is mythology.