I'm sure you can figure out the first two but do you know what the big fat O is?

Well that is the combination of 3+4
It's 7
God's number.
It also is used to represent outer space.
You know all those old school pics with people that look like they have halos on?
Nope, it is that big ole O.
You are not of this world traveler.
Those in the water love you,
Those in the caves do not, in fact they down right hate you.
Don't worry though they can't hurt you.
Not anymore.
Not ever again.

I thought the halos in old paintings referred to the sun god Helios. That is whom the Romans worshipped and why they created the false heliocentric model of the universe.
Heliopolis was an Egyptian sun worshipping city that pre-dated the Roman era at the end of which Constantine pretended to convert to Christianity. The halo is a symbol telling other pretend Christians of the catholic church hierarchy who they are Really worshipping.